I don't think it's a silly question, but I think free money basically means dismissing the money system altogether. That would work in an ideal world with ideal people but we are not that far out of the jungle yet (and I'm not referring to intelligence levels but to qualities that didn't evolve as fast as our intelligence). So, while you're right in principle, in practice there will probably still be a lot of injustice and suffering to go around long after everything is automated. Having said that, I still think it's a step in the right direction to reduce the ills of society.