Honestly, the way #Threads is evolving right now, I can absolutely understand why so many Mastodon instances are already blocking Threads before it becomes part of the #Fediverse.
For over a year now, I've known how social media can be and how social it really could be. In less than two weeks Threads has managed to become a brown swamp of anger and hate speech.
If this hits the Fediverse, then all the moderators' work over the last few years will have been for nothing.
Threads is simply turning into a racist, trans-hostile, homophobic swamp due to a lack of moderation.
As a moderator of my Mastodon instance, I was one of the few who was against blocking threads directly without having seen anything of it. Now I would very much vote in favour. (And I'm glad we voted for the block already together with the community)
A lot really needs to happen for Threads to earn a place in the Fediverse. If it will ever happen. (Doubt)