#they've opted for this revisionist death-by-a-thousand-retcons approach

[cantsayidont]

Despite its protestations of progressive values, STAR TREK media has always explicitly presented (and, with only fleeting exceptions, consistently celebrated) the Federation as an expansionist imperial power, engaged in a large-scale project of colonialism.

The usual apologia/rationalization for this, both from the franchise itself and from its fans, is that the Federation is also a post-scarcity socialist utopia. However, that is expressly not the case in TOS, despite the attempts of the later series to insist otherwise.

Indeed, the plots of some of the most famous and acclaimed episodes of TOS are specifically about resource extraction and ensuring the Federation's access to crucial resources, including lithium (in "Mudd's Women"), pergium (in "The Devil in the Dark"), and dilithium (in "Mirror, Mirror," et al). We are told repeatedly that the Enterprise has a mandate to use force to secure these resources if gentler methods fail. Moreover, while the Federation has a strategic interest in these resources, it's clear at various points in TOS that their extraction and exploitation are, to a significant extent if not exclusively, overseen by private interests for profit. For instance, in "Mudd's Women," Harry Mudd remarks:

Well, girls, lithium miners. Don't you understand? Lonely, isolated, overworked, rich lithium miners! Girls, do you still want husbands, hmm? Evie, you won't be satisfied with a mere ship's captain. I'll get you a man who can buy you a whole planet. Maggie, you're going to be a countess. Ruth, I'll make you a duchess. And I, I'll be running this starship. Captain James Kirk, the next orders you're taking will be given by Harcourt Fenton Mudd!

In "The Devil in the Dark," Kirk ultimately takes a regulatory position — he will not permit the pergium miners to kill the Horta or continue to destroy her eggs — but at no point does he suggest that stopping the pergium production that threatens the Horta is a viable or even acceptable alternative. The accord he proposes is contingent on the Horta's agreement that she and her children will support the mining efforts on her planet, since Kirk emphasizes that "a dozen planets" are depending on the miners to supply needed pergium. (What would have happened to her if she hadn't agreed is not stated, but the episode strongly suggests that she would have been severely punished for noncompliance with Kirk's mediated solution: forcibly relocated to some kind of Horta reservation away from the main mining operations, perhaps.) When the Horta does agree to this proposal, Kirk assures Vanderberg, "you people are going to be embarrassingly rich," which once again suggests that while the miners may have contractual agreements to delivery pergium to Federation worlds, they are still a private, for-profit business, not a Federation department or nationalized entity.

Profit is also Ron Tracey's motivation for breaking the Prime Directive in "The Omega Glory": He believes that he's discovered a "fountain of youth" that he can own, monopolize, and exploit, and that the value of that resource will be enough to buy his way out of legal trouble for his regulatory violations.

We mostly don't see the Enterprise crew handle money except on away missions in other cultures or times, but there are a number of indications that the Federation in this era has not abandoned money: For instance, Harry Mudd's list of past offenses includes purchasing a space vessel "with counterfeit currency," while in "The Apple," Kirk rhetorically asks if Spock knows how much Starfleet has invested in him, which Spock begins to answer, "One hundred twenty-two thousand two hundred …" before Kirk cuts him off. More tellingly, in "I, Mudd," we have the following exchange:

KIRK: All right, Harry, explain. How did you get here? We left you in custody after that affair on the Rigel mining planet. MUDD: Yes, well, I organized a technical information service bringing modern industrial techniques to backward planets, making available certain valuable patents to struggling young civilizations throughout the galaxy. KIRK: Did you pay royalties to the owners of those patents? MUDD: Well, actually, Kirk, as a defender of the free enterprise system, I found myself in a rather ambiguous conflict as a matter of principle. SPOCK: He did not pay royalties. MUDD: Knowledge, sir, should be free to all. KIRK: Who caught you? MUDD: That, sir, is an outrageous assumption. KIRK: Yes. Who caught you? MUDD: I sold the Denebians all the rights to a Vulcan fuel synthesizer. KIRK: And the Denebians contacted the Vulcans.

Whether Deneb is a member of the Federation at this time is unclear, but Vulcan certainly is, and so we may assume that Vulcan and presumably the Federation itself are also part of "the free enterprise system."

The first indication that the Federation does not use money is in STAR TREK IV, and it's not obvious there if Kirk's remark that "They're still using money" is talking about money more broadly or just physical currency, which the Federation may have phased out even if it still uses credit or electronic transfers of monetary value. (Certainly, McCoy's attempt in STAR TREK III to charter a starship indicates that he had some means of paying for passage, since the captain of the ship specifically demands more money upon learning of the intended destination.)

If we accept at face value the assertion of TNG and DS9 that the Federation has genuinely abandoned the use of money, rather than simply going cashless, the most reasonable Watsonian explanation is that this has been a relatively recent development during the 70–80 years between the TOS cast movies and TNG, most likely related to the development of replication technology (which the Federation did not yet have in Kirk's time).

Of course, from a Doylist standpoint, we could chalk up some of this incidental dialogue to the franchise's evolving construction of its own setting, in the same manner as anomalous references to Vulcans as "Vulcanians." Roddenberry and his apologists might also insist that he always meant to depict a socialist utopia, but was prevented by the nattering nabobs of negativity (i.e., the network's BS&P); I'm very skeptical of such claims, but the writers were acutely aware that depicting what Earth is like in Kirk's time would be opening a can of worms, which is why we didn't actually see 23rd century Earth (even briefly) until the movies.

However, the focus on resource extraction and its ramifications is such a load-bearing story element in TOS that the revisionist assertion that the Federation was already a post-scarcity socialist utopia in Kirk's time (as both DISCOVERY and STRANGE NEW WORLDS have attempted to claim) would require really substantial retcons of the original show, perhaps to the extent of insisting that some of those events never took place at all, or happened radically differently than what's in the TOS episodes most STAR TREK fans have seen. For me, anyway, that crosses a line from willing suspension of disbelief to "don't trust your lying eyes," and suggests a frustrating and somewhat disturbing determination to insist that TOS is something much purer and nobler than it is rather than grapple with its actual conceptual flaws and ideological shortcomings.