Thin shaming happens to me all the time too. I'm a stripper and unfortunately I deal with men who have tons of shitty opinions on what a "real" woman needs to be like. It hurts when I'm called anorexic and to "Damn eat a hamburger or something..." as they poke as my ribs. I'm not trying to say I have any clue what it's like dealing with other kinds of shaming but yeah... but I think thin-shaming is a thing.
Oppression is more than “it hurts my feelings”. Trust thin people to take a post on a fat person’s suicide attempt being chalked up to their size and to make it all about their feelings.