I am mostly judging by the "hot" feed, since I only follow a few people that I knew via Twitter, and to a significant degree you're right-- there was the same kind of drama on kbin and lemmy when I joined. (I checked out threads for ~30 seconds so I can't say about there) I don't remember anything like that on Mastodon, but I'm sure it's there. It seemed more rapid-fire on bluesky. Specifically there seemed to be a lot of hate against the devs on Bluesky for various reasons.
In any event, it's a pretty big echo chamber right now but that's to be expected while it's in invite-only. I'm sure it will settle out when it opens up to the general public.