I never bought the claim in the Star Trek universe that the Federation had evolved beyond money, and I don't buy it here. (Have we heard of this before on The Orville?) Replicator technology makes most resource shortages disappear, but it's still damned efficient to have a means of tracking the exchange of value.
Utopian/post-scarcity economics is only now being discussed seriously, in part because of the impacts of technology on the
job market. Right now, the discussion don’t have much in the way of solutions since they’re just now describing the problems and recording the effects.
The first real warning sign
I can think of was a circa 2012 (I think) prototype modular robot that could be programmed to do @200 manufacturing jobs for the price of 5 years’ labor of an Indonesian factory worker.
Fast forward to today, we have driverless automobiles threatening any job involving driving for a wage, cashierless retail stores, specialized software that can generate basic legal documents for a growing number of jurisdictions, and medical diagnostic “AI” programs that are about 60% accurate compared to actual MDs...and improving.
A 2017 article estimated 800 million worldwide jobs are in danger of being eliminated by technology in the near future- mostly concentrated in modernized countries. Another (from Forbes, as I recall) claims tech will eliminate 6% of the jobs in the USA by 2030.
These trends are more likely to accelerate than decelerate.
So the question you have to ask is, what good is money when increasing numbers of humans can’t find a job?
The original Star Trek episode “The Squire of Gothos” has a scene in which Kirk rejects the temptation of piles of gemstones as worthless baubles, claiming the Federation had been creating them for years. As of the
1980s, you could buy a rod of synthetic corundum (ruby, sapphire) more than a foot long for @$50. Those rods had clear indicators that they were lab grown. Better ones from that era were indistinguishable from the natural ones. Manmade diamonds- not stimulants like CZ ot YAG, but actual diamonds- are a fraction of the costs of natural ones, but still have telltale signs they’re artificial. With enough time...