It only works when you can reach bullies in real life, but online the best thing you can do is to not dedicate them a single moment of acknowledgement because that is what they want, that is what they live for and thrive on. Be it treehuggers, animalfuckers, cultists or children.
If you take shit that means you give a shit, stop giving shits. It's that easy and I speak from experience of years of taking death threats, stalking, night-calls/door-rings and hate campaigns just because I happened to take part on a nationwide TV show.
What Patrick's doing is opening the door wide, if he takes it personal he's going to continue down this bad path and eventually burn out. He needs a mental liquid-diet so he stops taking shits.
(buuuut if we're talking the kind of "bullying" going on in this article then that should have been handled better from the start by her, like immediately cutting the convo and doing something about it.)
But "she" [from the screenshots anyway] did not discourage these comments. No, means no. Any persisting comments following that no qualify as harassment. Not that this excuses his behavior, but it's a point that should be raised and considered.
Sweet victim blaming bros