As with a lot of things these days, the places you congregate are what you make of it.
Putting aside the issues with who owns twitter and some of their recent policy shifts about content, I still have relatively sanitized feeds where I mostly only see friends' content. I'm still making new friends from Japan on it through our shared hobbies. Most of the sports news I follow is still there.
Nothing materially has changed about how I use the platform.
Bluesky is still pretty empty. Maybe some "nodes" of it are getting busier as people trickle out of twitter but I'm not sure it matters much until theres more saturation of many more things.