UBI would only ever work in Star Trek world: a world where there is infinite cheap power, instant atom level recycling and zero resource scarcity.
Real UBI would be much more like The Expanse and less like Star Trek.
Just because COVID was the largest psyop and authoritarian litmus test the world has even seen, doesn't discredit what it showed us specifically about modern monetary theory, a.k.a just printing money.
Money has to represent some value. When you hand out that much of it without exchanging value, the rest in circulation looses value.