Can't speak for WaPo but the New York Times comments sections are absolutely dominated by a handful of designated 'top commenters' who rush to post on any major story. Sometimes their comments are good, but then there's the guy who writes a poem every single time, or 'Socrates' who posts the same cookie-cutter 'blame-the-GOP-all-the-way-back-to-bush' comment with the most dramatic rhetoric possible, trolling for like…
It seems like a mix of Reddit google's network algorithm could work - don't just upvote/downvote the post, but lend the commenter's credibility. So upvotes from hordes of poo-flinging monkeys aren't weighted as heavily from upvotes from credible sources. Then the hack: this is a newspaper. They have no reason to be fair. Give community moderators super-credibility. So they can upvote people and not just give their co…
When people's needs are satisfied, they want more of that.
So let's satisfy their needs instead. Echo chambers are ultimately self-defeating as they bring on more divisiveness and intolerance.