Media

The best conclusion I can come to from watching the trolls on TYT is that the comments section lays in waiting for whatever is said. It usually not more than a minute after that the Troll Army attacks, sometimes it's seconds, with a response long enough to make it clear that it was preplanned.
No body can write that fast
There's also a hint that there's some kind of autonomous AI program is turned loose on the comments section.
Several years ago a computer program passed the Turing Test, so they're out there.
But the real reason these comments appear is to keep the responders busy writing counter comments, and not being politically active. That means you really can't effect too much if you're busy responding to an AI program that doesn't really care what you think and can't have it's opinion swayed no matter how you respond.
All those replies just put the trolls at the top of the comment section, so don't respond!