the more educated you get on fat issues the more you realize that almost everything that supposedly justifies fatphobia is actually complete bullshit.
most of the health conditions that are treated as almost divine punishment for being fat (like heart issues and diabetes) are being revealed to actually *cause weight gain* instead of being caused *by* it.
this goes for social 'consequences' of being fat, too. is that "neckbeard" redditor actually fat because he spends all his time online, or is it that he spends all of his time online because he's not treated like a person if you can see that he's fat, so the internet is his best option?
everything is less accessible to fat people. seats on busses, at restaurants, and even at things like amusement parks, are frequently too small to comfortably sit in for a fat person. people treat you worse if you're fat, or even try to avoid you entirely. you get judged for doing leisure activities, or even for exercising at a public gym, (which proves the claims of trying to motivate you to get fit are bullshit btw) getting filmed and laughed at, posted online for your body to be a punchline.
if you want to be progressive or body positive you *need* to be examining your beliefs. oppressed people are routinely forced into positions that, from the outside, may justify the narrative about these people. black folk are pushed into poverty, so that crime is often their only means of survival, enforcing the idea that black folk are criminals. queer folk are made unsafe in public so that we use codes to identify each other, enforcing the idea that queer folk are trying to secretly seduce people to be gay. and yes, fat folk are forced indoors and online so that they can enforce the narrative that we are lazy shut-ins.