A similar argument could be made about public spending on education, that it only creates inflation. But of course education is a great way to increase productivity. Similar effects would probably follow from universal healthcare and a UBI: namely healthy, financially secure people can do things that have short-term costs but long-term benefits, like starting a new business, or doing a low-paid internship, learning new skills, and so on. Also, fewer sick-hours leads directly to increased productivity.
Uh yeah, but that doesn't make it a good thing. If the expense of education puts you into a debt hole that is so deep that it's impossible to make up for it with increased productivity, that is a net negative.
And what does this have to do with housing? Increased housing costs is like the exact opposite of increased productivity. Limiting supply of housing is a rent-seeking behavior.
Seeking to limit supply is not necessarily rent-seeking (which is a motivational state), but sure.
The comment was directed toward the issue of whether UBI is inflationary, not whether housing supply should be increased.
This isn't proof or anything, I just don't think the bay area disproves anything.
Perhaps UBI should be packaged with a free/constant price flat/cheap house depending on area.