Where else could the money come from, exactly? Anyhow, money creation is fairly normal, which is why I would tend to expect that if such a thing were implemented: https://en.wikipedia.org/wiki/Money_creation

But people have to be willing to exchange things for money, so if you create tons of it, it becomes toilet paper. We already know this can break down due to direct, empirical observation. Just look up past examples of hyperinflation: https://en.wikipedia.org/wiki/Hyperinflation

And this is the sort of thing that worries me. All the past examples had to drop their own currency, which they could no longer be trusted with, and become dependent on a foreign power. All the past examples were governments that though the government's funds were simply unlimited and many were Socialist governments that wanted to tax from the rich and give to the poor.

That said, don't get me wrong. If I could actually believe that none of us had to work and robots would do everything, I'd love it. But having worked a crappy ass job, I know that some work can only get done out of necessity at present. I really hate that, and I don't wish it on anyone, but I don't know how to fix it either. I wish I could be convinced that some of the fine, caring people putting out these proposals had thought them through, but they've mostly helped me understand that they know less than I do, and I know almost nothing :/