At the risk of this heading down a path that was NOT intended... some people just want the human contact. Whether they know it or not, this is one of the main reasons people visit masseuses today.
And that being the case... it seems clear to me that demand for this will always exceed the supply of people willing to just massage everyone for free out of charity. But that won't make the demand go away, despite the (monstrous, totalitarian) re-education that would be so desperately focused on to try to change human nature.
So, again, for someone seeking this service today, they just visit a spa, ask for the service, and pay some form of money for it.
How would one acquire a massage in a RBE?
You'd cultivate a relationship with someone. The answer is most probably that one wouldn't 'acquire' one from strangers.
Is that a black mark against RBE?
"Respect from one's peers" will always be 'in demand' too... but (in most circles) you can't buy it. Same with genuine love. The demand outstrips the supply and money hasn't solved it.
Is that a black mark against capitalism?
despite the (monstrous, totalitarian) re-education that would be so desperately focused on to try to change human nature.
Where on earth does that notion come from?
I rather think the RBE will fail if one of it's main goals is to eliminate 'poverty' because the natural currency that would arise, without people even realizing it at first, would be 'reputation' & 'popularity'.
People would be sucking up to each other left right and center to 'put a good word in for me' with someone else.. to be part of the 'in' group etc.
That's how you'd get your massage. "hey.. get me invited to that party all the cool folk are going to.... I'll give you a nice back rub!"
There would still be social lepers - and they would be the new poor, but this time there isn't some other currency they can use to alleviate the suffering their social ineptitude might cause them.