He put a fucking spoiler! Plus, if most of us were to post that, I highly doubt we would've gotten the reaction he got.
I really don't give a fuck if it's in a spoiler or not, or who posts that. Kidding or not. And it's pretty clear he wasn't kidding anyways.
There's a certain point where you stop with that kind of stuff, and I honestly don't like to hear any of it what so ever, but that is definitely going too far.