Every redistributive program that gives the poor more money increases demand for goods that poor people want - that's the whole point!
It's no problem because supply can adjust to compensate - the exception to this is land, which is why a UBI ought to be funded with a land value tax. This is why Yang's UBI isn't very good, because it is sales tax funded (he's too much of a centrist to tackle land and capital, touching either of these things upsets rich people's delicate feelings too much).
An underdiscussed advantage of UBI is that it's good even for those that don't get more out of it overall than they put in, because it spreads income out more evenly over the whole lifecycle (people generally have not enough money early in their careers and during child-bearing, and too much during later life and death).
It's no problem because supply can adjust to compensate - the exception to this is land, which is why a UBI ought to be funded with a land value tax. This is why Yang's UBI isn't very good, because it is sales tax funded (he's too much of a centrist to tackle land and capital, touching either of these things upsets rich people's delicate feelings too much).
An underdiscussed advantage of UBI is that it's good even for those that don't get more out of it overall than they put in, because it spreads income out more evenly over the whole lifecycle (people generally have not enough money early in their careers and during child-bearing, and too much during later life and death).