IMHO, the problem is not disruption by outsiders. The worst cesspools I see are entirely in-group.
It seems to me that the in-group echo chamber becomes not a discussion, but a means for all to signal their right-thinking loyal membership of the group. Just over the last couple of days I've seen some awful stuff along these lines on Facebook, regarding the new opening on the Supreme Court. Someone will share a meme that was posted by one of their in-group pages. This turns into a bunch of "me too" replies, but each of them needs to share a comment that includes a non-clever pun based on misspelling an opponent's name, and many of which declare how evil the other side is and deserves whatever they get. (notice I'm not taking sides: I think this applies equally across the board)
The problem here is that from a few cheers that get the ball rolling, any semblance of discussion evaporates. It's like when the neighbor's dog barks in the middle of the night, so your own dog replies, and then another gets into the act, and pretty soon the cacophony has everyone awake - but nobody's any better off from knowing that there are a bunch of dogs in the neighborhood.
I don't know what the solution is, but I don't think that the problem is outsiders being disruptive - it's insiders clambering to signal their tribal membership.
EDIT: missed the "not" in first sentence. BIG difference!
Sure - but the signal can only be heard from within your in-group's discussion. So they'll generally flock together taking potshots at the outgroup from afar. There are of course cases of drive-bys, but that's harder to organize and rarer.
It seems to me that the in-group echo chamber becomes not a discussion, but a means for all to signal their right-thinking loyal membership of the group. Just over the last couple of days I've seen some awful stuff along these lines on Facebook, regarding the new opening on the Supreme Court. Someone will share a meme that was posted by one of their in-group pages. This turns into a bunch of "me too" replies, but each of them needs to share a comment that includes a non-clever pun based on misspelling an opponent's name, and many of which declare how evil the other side is and deserves whatever they get. (notice I'm not taking sides: I think this applies equally across the board)
The problem here is that from a few cheers that get the ball rolling, any semblance of discussion evaporates. It's like when the neighbor's dog barks in the middle of the night, so your own dog replies, and then another gets into the act, and pretty soon the cacophony has everyone awake - but nobody's any better off from knowing that there are a bunch of dogs in the neighborhood.
I don't know what the solution is, but I don't think that the problem is outsiders being disruptive - it's insiders clambering to signal their tribal membership.
EDIT: missed the "not" in first sentence. BIG difference!