I'm not gonna engage with you beyond this since you're obviously uninterested in opinions other than your own, otherwise you might have looked at any of the studies I linked investigating weight-related stigma, which is related to others' kindness or lack thereof.

You're not fighting societal acceptance of obesity, you're just lazily perpetuating harmful social stigmas to justify your own discomfort with fat people.

You say it's not "normal" to be fat, but if a condition is considered epidemic, it's not really abnormal anymore, is it.

You don't know what that person eats. You don't know if that person has a medical disorder. You don't know if that person is disabled and unable to prepare healthy food for themselves. You don't know if that person has an eating disorder that they can't afford treatment for. You don't know if that person is on medications that affect their weight. You don't know if that's even a real person or an AI-generated image.

But you're real quick to diagnose the cause of their obesity as exclusively their personal failure for not eating the correct amount of the correct food.

It takes minutes to see what researchers are saying about this stuff.

Historically, the central dogma of the science of obesity has been that it is simply an energy balance disorder: calories in, calories out. If this energy-based model (EBM) of obesity, was true, then essentially exercising more and eating less should work for everyone. However, this is not the case. Many researchers believe that the pathophysiology of obesity is more complex.

While both social–environmental factors and genetic preposition have been recognized to play important roles in obesity epidemic, Gao et al. (2021) present evidence showing that epigenetic changes may be a key factor to explain interindividual differences in obesity.

Honestly there have been a few times recently where I've seen fat people doing or saying interesting things online, and half the fucking comments are vitriol about their weight and how it reflects on their character, as though that overshadows and invalidates anything they're doing. And sometimes I see other commenters challenging these views, and sometimes the hate commenters will backpedal of they realize that the person they're discussing has what the consider to be a valid medical excuse.

I'm autistic and ADHD, and to me, that kind of behaviour is a reflection of what goes on in places like fakedisordercringe, where they claim to respect people with official diagnoses but never bother to actually see which of their targets has an official diagnosis, or consider that the absence of a formal diagnosis doesn't mean the absence of the condition. And that's because it's not actually about the underlying reasons for the behavior they're mocking, because they don't care about those reasons. They'd rather not know if there's a diagnosis that would exclude their target from mockery because how their target is acting makes them uncomfortable.

It's a way of enforcing conformity through cruelty, just like bullying fat people.

And I've read stuff like this piece, with the line "I wish I didn’t have to justify myself, or base my worth on proving that I’m trying.", and I see myself in that. I've burned myself out multiple times and seriously damaged my physical and mental health as a result of trying to act like I'm neurotypical.

I'm fucking tired of seeing anybody get judged as moral deficients online by people who know nothing about them or their histories.

"Fat", I think, is a colloquial term.
This seems like "morbidly obese". And you are absolutely correct using a term (not) "normal" here.