They’ve been stirring shit across lemmydom.

But, they haven’t hit everywhere, nor have they hit everywhere equally.

This means that instances where the defederation policy is reactive will not, and should not defederate until and unless users from there cause problems.

Have you checked the federation/defederation policy for your instance? If not, you should. If it is a reactive policy, then it comes down to you deciding to stay and use the block feature to curate your feed, stay and attempt to change that policy (good luck), find other instances to use, or use apps with instance filtering features.

It is my personal policy to not have a single account. I decentralize as a user. I recommend this to anyone and everyone in the fediverse. This makes it much easier to shift around as needed to avoid problematic things like this. If I don’t like the federation policy of a given instance leading to a bad actor instance causing trouble, I just don’t use that instance for a while, and eventually the disruptive place will get defederated for cause. Easy peasy.

I strongly suggest using an app with instance blocking. Connect, sync, and summit all have it (though I’m not certain how bulletproof each is). This means that no matter where you go, the users from the problem instances are filtered out. This only becomes a problem if you moderate C/s with decent traffic. If that’s the case, it is usually wise to set up a different app without filters to do mod work from (currently there’s only sync and summit that have mod tools that I’m aware of).

I’m less up to date on browser or PWA filtration options.

But, be aware, defederation is meant to be the last choice in most instances. Defederating without a good reason defeats the purpose of federation. Many admins believe in that principle, so this kind of post may not amount to anything at all.

I agree that hexbear is a problem. Because I’m decentralized as a user, I have seen the users from there stirring shit everywhere they target. And that is why they need attention as regards defederation, not having stupid opinions. We, as a general group of fediverse denizens, really need to be careful with calls for defederation solely on the basis of stupidity.