A Star-Trek style "post-scarcity" economy can't exist in the real world. It depends on an impossible paradigmatic shift in basic human nature across the entire species (people just "evolve" beyond their base vices and desires such that they're willing to work purely for the sake of voluntarism and the betterment of humanity, there is no racism, no sexism, no struggles for power. *) and technology that violates basic physics (replicators, warp drives, transporters, etc.)

I'm sorry but anyone who looks at Star Trek as a serious model for anything is at best naive. It's a space fantasy show whose Luxury Space Communism is little more than set dressing because it's a capitalist enterprise (pun intended come at me petaQs) made by capitalists for capitalist ends.

Likewise, expecting LLMs to serve anti-capitalist ends (eliminating the need for jobs among anyone but the capitalist class) when they are entirely controlled by capitalists is naive.

* according to the canon set by Gene Roddenberry. What actually plays out in the franchise is different, because human conflict makes for better entertainment.