"The idea of a Universal Basic Income is to provide unconditional universal cash transfer without having to fulfill any qualifications."

No, you have to live in a rich country. https://remarklj.medium.com/how-do-you-pay-for-a-ubi-451a5cb505f4 And, if I were King, you couldn't be in jail. Ideally, you couldn't be a felon, but the realities of the marketplace make it necessary for everyone walking free to have a piece of the pie. But first of all, there must be a pie, and that's what critics miss. The USA is not India.

I agree that none of the experiments prove anything, because none are in fact universal and permanent and significant and affordable. The only experiment is the one recommended by Napoleon: On s'engage, puis on voit. If it doesn't work, it doesn't work, and it can be ended. But it must not sunset by its own terms.