There is no form of hating fat people - including concern trolling or hating fat acceptance - that doesn’t amount to you saying, “Uh, excuse me, what made you think you could go around having a body without justifying it to me?”
When you talk about “fat” diseases - you’re saying: “uh, that body better be perfectly healthy in all instances forever before I give you my approval.”
When you talk about “it’s just not attractive” - you’re saying: “I think I made it clear that if your body isn’t pleasing to me, I’m not signing off on it.”
When you talk about “just eat less and exercise more” - you’re saying: “who gave you permission to live your life as you see fit instead of how I see fit?”
So let me just be clear: all anti-fat arguments are always and completely invalid because fat people will never owe you an explanation or justification for their bodies, their health, or their lives.
Fat acceptance is simply the assertion of a right fat people have always had, and one it’s long past time others started accepting.