They are so awful. It feels like they were built from the ground up to discourage thoughtful conversation and to just create outrage. On all of these (and with youtube comments as I recently realized, although they have a placebo downvote) there is no way to downvote trolls (or bad/misinformed/useless opinions) and there is no real moderation. The only way to deal with it is to create your own angry response and then it shows up on peoples feeds as so-and-so vs so-and-so... pick your side. It is terrible.
Like in the article, one of the people tweets "stop retweeting #dcblackout" which promotes it further. These platforms feel like they are designed to profit off of humanities worst impulses and I wish there was something I could do to stop them.
What are the main features you'd like to see on a new platform?
Indeed, they’re built from the ground up to promote engagement with no regard for positive or negative impact. It so happens that humanity’s worst impulses drive a feedback cycle that’s wonderful for engagement but terrible for humanity.
It’s a classic case of amoral objectives leading to immoral outcomes.
It does require a critical eye, which the majority of people don't have, but I'm not sure what the best way to solve that problem is. Moderation at that scale doesn't seem feasible, and a downvote system to silence people, as you suggested, would be easily abused.