Right now you can blow all of your food stamps money on bottles of ketchup if you want. Nothing is stopping you. And there is no fall-back. And food stamps don't fix your car, section 8 housing doesn't fix your car, even if you have SSI, it's not really enough money to fix your car.

So all of this is a straw man and completely irrelevant to anything related to BI. Once you expend your welfare, you don't get more just because you asked.