I don't think it matters where it gets put in terms of inflation. What we learned from the stimulus is that taken in aggregate, the population became less price sensitive because they had more money, and sellers felt the increased money supply. This allowed prices to rise. I don't see how UBI doesn't create a similar outcome, but I'm happy to review a paper or something that shows possibly how after an extended period it levels out. I'd imagine in a similar vein if you deleted overnight Social Security prices would fall because the money supply would be impacted so severely.