Twitter's level of derangement is so high that I honestly think it's not a good place for people to be on. especially if they have some issues already.
The obsession and hatred it breeds can warp people's minds to the point it gets disturbing.
You are right. Although twitter can be fun sometimes, it's so negative and depressing most other times. Someone is always arguing about something. It reeks of misery.
I've unfollowed most stan accounts, even my own fandom, except a few update accounts.