What does Post-Monetarism Mean?

[kch49er]

This is why I like the term post-scarcity if money is 'a medium of exchange' I don't see how you can have a post-monetary system(Short of transap interventiona nd posssibly draconian laws) I know before we talked about paintings by artist,or scupltures and trading services, but if the pictures by artist x are so great then a lot of people might trade for y number of x paintings,which is back to money again.

Of course not everyone might accept them but then not everyone accepts $ or € or bitcoins.