What's the difference between a 300-pound overweight tumblr feminist and a BDSM-fetishist? The latter can take a joke.
I'm not getting the comparison here. Sounds like an excuse to put down plus-sized people.
I don't know what exactly 'BDSM' is but I do know that fat people are worthless. Just stand next to one, you'll see.
Saying someone is worthless because they're fat is hurtful. Body size is often genetic. It's wrong to put people down because of a trait they have little control over.