This is definitely partly due to AI -- you're reading a bunch of messages filtered through it -- but that's not the only aspect. You're also talking exclusively to the sort of people who filter everything through AI: this is a community/audience problem, not just a technology one.
Lately, everything online sounds the same.
Polished, professional... and kind of boring.
When we let AI smooth out every quirk, we lose our voice — and the internet gets a little less human.