> Somebody has to actually create all the stuff that people consume. UBI doesn’t address that point.
“UBI” isn’t actually a specific plan, its a broad concept within which there are many specific plans. But the broad concept itself does address this, though many of the more detailed plans do so in…more detail.
At a high level, one of the central points of UBI as a replacement for traditional means-tested welfare (and why some of its earliest advocates were right-libertarians, not lefties, such as Milton Friedman who advocated “negative income tax” which is identical to a UBI) is that it eliminates the disincentives to earning outside income that come with the sharp (sometimes greater than 1:1 when aggregated across all benefit programs a person qualifies for) funding reductions for outside income that come with means tested benefit programs, increasing the marginal reward (and thus incentive) to work.
> Rich people still eat the same amount of food for dinner.
No, they generally don’t. Oh, sure, that might be true by mass, or even by calories; but not by labor-hours of work that went into it, or dollar cost, which is what is relevant here. And that’s true across all categories of consumption.