Edxl:
Another thought that came to me: some of the very fat feedees seem to have the desire to be 'the fattest ever', or more realistically to be seen as extraordinarily fat. And for others, for whom this is a business, there is customer pressure to keep gaining more or to be bigger than the competition. As more very fat people show themselves online, and more feedees get big, that must make pressure to get even bigger. Maybe a decade ago at 400 pounds that would be 'enough' but now it doesn't seem so extreme, so be it from personal desire or market pressures a feedee that size may feel that they have to get bigger. (and at the same time, they see others living their lives succesfully at even larger sizes so it helps confirm that they could too)
Yes—all of this.
Back in the 1990s being a feedee
at all was radical. The bar has gone up and up and up, and weights/sizes with it.
Seeing others living decent lives at what used to be jaw-drop “you’re gonna die any second now!” sizes has to make it seem more realistic and achievable, as you point out.