If you can’t even keep the happy achievements of a guy with downs from descending into an angry internet mob, then there really isn’t much hope for a positive future for twitter, is there?
While that may have originally been the intention of the site, and it might even be what Twitter still publicly claims to do, that is not at all what they actually give you now.
A couple of years ago, Twitter was awesome for keeping up with interesting new work in my topic area. More recently, it's a sh!t show of angry, snarky people I don't know, ranting about things that I either don't care about or could easily find somewhere else.
Maybe these people are all friends of a friend of a friend. I don't know and I don't care. I only log in when I have something to post -- usually some sort of shameless self promotion for a new paper or a talk.
Encourages "drive by snark" and shows stuff to people that are likely to snark.
You can read it here: https://jasonlefkowitz.net/2013/02/i-kind-of-hate-twitter/
I don't share your pessimism.