Somehow we still get away with funding other welfare programs, even though we have a rising debt ceiling.
Anyways, this is why you increase taxes on the ultra-wealthy, in order to pay for UBI. It doesn't mean more debt.
You want to tax Larry Ellison's yacht and other ludicrous spending, fine by me. But that's the ultra-wealthy's consumption - it's not even their income, much less their wealth. If you can't tell the difference, you're not getting the point of this debate.
If we really think that it is unjust for money to be concentrated in the hands of the rich and should go to the public instead of their heirs or private interests, there should be an option of zeroing out one's bank account. That is, literally destroying money (not to be confused with wealth). This should have roughly the same effect as dividing up one's fortune and distributing it evenly to all holders of that currency.