Even if average inflation doesn't go up, when you look at specifics it doesn't look very good for the poor, the very people it's supposed to help. Take your example.

- Low income housing costs will probably inflate because all poor people will have an extra $1000 to spend. - Avocado costs probably won't rise, as middle classes will have the same spending power - Bentley and yacht prices might decrease as the rich have less spending power.

So you haven't helped the poor. You've created the usual issue with socialism/communism that in the end all it does is pull everyone down, rather than lift anyone up.

If that's your goal, fine, admit that you hate the rich. But the marketing promises of UBI are not that, they are about helping the poor.