This is before the effects of a hugely disastrous increase in taxes on the middle class (who is the one's that are realistically most harmed by high taxes) and rampant zimbabwe style inflation take hold.
If you want to raise the lowest, you need ownership in something, not just giving things away for free. When people are given free rent, they trash the place since they don't care about. Free money they will just burn it on whatever. But people that own homes, people that own business, people with assets care about them and will raise up the community. If you're going to give a trillion dollars away, instead of giving it as free money to be eaten up by landlords and entertainment companies. It would be better to spend a trillion dollars building homes or condos and giving people them or giving bonds or shares in businesses so people have wealth.
But UBI will never work, imo itll lead to the Earth in The Expanse, where people "on basic" are just in abject poverty with low desire for work, and a ruined economy where jobs are extremely scarce.