I've had weird posting anxiety on cohost.
to be fair, I never really posted that much on twitter either - I was mostly just a lurker. but I think some of that was that twitter didn't really gel with me as a medium. I liked reading the stuff that people posted there, but trying to organize my own thoughts into that format always felt kind of odd.
I think the rat-race of metrics on twitter also kind of hurt it; even if it was people just joking around about posts doing numbers or tracking their follower counts or talking about gaming 'the algorithm' it lent a kind of hustle-y vibe to the site, and for someone with no followers that vibe amplified the feeling of shouting into the void and like nothing I said could matter.
at least on sites like cohost and tumblr I can use tags to more easily reach a broader audience; even if people don't follow me directly, I have ways of putting information in front of people who could at least be potentially interested. so I'm hoping that can push me to be more active here.