It was started by return of kings, an hilarious MRA website full of paranoids along the lines of a voice for men.
Does anyone really take these people seriously? There's a post on their site which purports to come from some kind of psuedo-military group which has 'infiltrated' feminism. I mean, come on. Only the utterly insecure need to fat-shame, slut-shame or whatever-shame, sucks to be them.
There are more indicators of poor health outcomes than weight, funny how we don't genetic-predisposition-shame people, isn't it? It's all about a value judgement on 'who they'd fuck' probably with a healthy dose of 'who refused to fuck them' thrown in.