The endgoal is cooming. Or, more specifically, politically condoned, plausibly deniable cooming, whereby, yes, you are forcing other people to publicly participate in your fetish online, but you're targeting someone you'll get Internet Good Boy Points for harassing, and if anyone ever calls you out for it you can claim, "Um, ackshually, I was just joking. It's a joke. I was being satirical when I posted about that incredibly specific, paraphilic scenario multiple times. God, can't you take a fucking joke? Ha ha, get a load of this chud who doesn't understand irony."