Pride is for people who were routinely ostracized, beaten, disowned, and murdered because they were different in a way they couldn't change.
Being overweight is something you can change.
Being fat has always been accepted. It's just not celebrated, because it's not healthy, indicates that you don't take care of your body, and/or you don't have control over your eating habits. There are rare circumstances when weight is influenced by a medical condition, but generally it's people eating too much and not moving enough. Being fat is looked down on the same way as being un-showered, wearing dirty torn clothes, or smelling bad. It's not the person, but the way this person presents themselves, and it can be changed. It's like if a guy wears offensive slogan t-shirts every day, and gets upset when people aren't especially nice to him. It's your own doing, my guy.
Were you kicked out of your family because you're fat? Were you fired from your job because you were fat? Were you denied healthcare because you were fat? When was the last time someone targeted fat people for a mass shooting?
Fat acceptance is just an attempt at finding victim hood within habitual self-flagellation.
But also, I've never fat shamed anyone, I've never picked on someone because of their weight, or "judged" them. People who do that are assholes. I'm just upset that pride is being routinely co-opted by other movements like furries, fat acceptance, and all this other nonsense that, again, nobody was ever actually hurt over. I'm sorry you feel judged at the beach, but gay people are routinely murdered because they're gay and pride is a protest.