Fair enough, but I’m more concerned if UBI turned out to be a bad policy, would it be repealed? Practically speaking, the government has a poor track record of back pedaling on bad policies once they are in place.
I'd say no, though. My experience so far has been that my government has had no problems repealing (to various degrees) things like health care, education/student loans, or public ownership of various things. From my limited knowledge this has been similar in much of the Western world, at least.
In slovenia, we still have the "financial crisis" (2008) 22% VAT, which we "temporary" increased back then (from 20%).
But honestly I think it's a great point. Our taxes did not go down, as far as I know. I'll check in one of the coming days, but I'd be shocked to find out it did...