Anecdotally, the last few times I have seen a Bluesky user mention Mastodon it's been to complain they see "trolls over the bridge". Screenshots refer to servers I never see on fedi actual.
1) there's a lot more diversity on ActivityPub than is visible
2) it may be the kind most mainstream fedi servers block as trolls
@nprofile1q... @nprofile1q...