The worst I've been is 280 pounds/20 stone. This was during the height of my bingeing with reckless abandon and no attempt at self-regulation.
I genuinely can't fathom how someone can get over 300 pounds/22 stone without height playing a major part in it (e.g. you're over six feet). At my worst there was a noticeable impact on just basic living and I was eating as much as I could stuff into my gullet. It just impacts living so much, and then there are people who not only weigh more than 300 but go above 400 too. Granted, I'm at a disadvantage due to general health and I'm more sensitive, but I do struggle to see how 300+, 400+, is livable. And I struggle to see how someone can live like that and then also have the gall to publicly say that it's fine and good to weigh so much, that there's "health at every size," that they simply practice self-care and they're beautiful.
Am I a fat shamer? I guess I fit the bill. I've lived with morbid obesity and its effects, I've seen it and its effects in others. I find it really difficult to consider obesity a neutral trait.