When you can go into what was Walmart, or Amazon online, and get what you need for free why would you bother with barter?
You can, of course do as you please, this is a voluntary paradigm, but why would you reenslave yourself? That doesn't make sense.
It takes a tiny fraction of the people to keep our consumer goods flowing, even today, that won't change when everything is free because those that contribute nothing today will become productive, or be outed as bums.
Under my proposal bums are equal with ticks and mosquitoes, not many will mourn their demise.