if the users on #threads become routinely abusive of fedi folks (by poisoning hashtags and tagging people here with crap), we will need to consider defederation. and their size will make that much more annoying to do.
that there is horrible shit there and they are abusive to their users is not a reason to block them imo. it's a reason to federate and welcome people to move here while retaining their connections there and avoiding the bad meta data policies as much as possible.
I have a Facebook account to stay connected to friends and family. I barely use it but I don't see the horrible shit. same with the crap on the wider www that I never see. this is true for most people and I see federation as more of a way out than helping the shit spread.
here we've had fights over a Harry Potter game and whether the BBC should be welcomed cause they have anti trans people on their shows. many consider criticism of Israel to be antisemitic. our norms need work.
william.maggos