This is a non-argument. Before money was created, nobody had been able to show that a non-barter economy would work. Or capitalism for that matter. The fact that nobody has so far has figured out a way to make it work doesn't mean anything. The only thing of interest would be conclusive proof that it's impossible.
I'm fairly sure that at some point we need to move over to some sort of steady-state economy due to the scarcity problem [1]. I'm also fairly sure that the transition will happen in small steps and people will only notice afterwards. Some pieces are already being discussed and some have been tried, such as currencies with negative interest, basic income, ...
[1] The only other option being mass extinction. That's a bit meh, I don't feel like being part of that. I'll rather choose Star Trek :)