What's wrong with Universal Basic Income?

Where's the money/resources coming from? (Even Musk's putative net worth would be drained in less than 3 months at $1000/mn just for the USA--not even considering how badly stock values would crash if he were forced to cash out)

Where's the money going to? (You want inflation outside of collectibles and crypto? Give people in need money to spend without commensurate requirements to improve supply)

Whose included in Universal?

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The experiments so far that have called themselves Ubi apparently use "universal" in an inconceivable way, and if there is one thing we have found out about humanity, it's that results for a few don't often play out the same at a large scale.