Not all, but it’s definitely not for everyone’s tastes. Just block the instance and move on. Go to your user settings, blocks tab, scroll way down to instance, and put hexbear.net. You will still see posts from it and its users, but still that improves things immensely e.g. you won’t see communities on it anymore and you won’t receive notifications for when the people continue to respond to you weeks and weeks and weeks after some innocuous comment you made that they did not agree with hard enough and thus earned their undying ire.
I would rather in the future see such things be opt-in rather than opt-out… but then I don’t run an instance and this is what we have now.
Also most instances already defederate from lemmygrad.ml for the same reasons, but not yours so if you do it for hexbear.net then you should probably do it for lemmygrad.ml too while you are at it.
And then eventually, even if months later, you will find yourself doing this again for Lemmy.ml, for vastly reduced but again still similar reasons. That one will cost you some good communities, but is more than worth the cost imho to entirely transform your experience on the Fediverse, to have blocked the big three. Also some people add Midwest.social but I haven’t done that one yet. All of those call themselves “leftists” but more importantly somehow feel that their political beliefs entitle them to behave like jerks - not uniformly so but as you are seeing, definitely it’s a noticeable pattern.
The motto of the Fediverse: to stay sane, block early, and block often. To which I will add: you cannot control the entire world, only yourself, i.e. if it drives you crazy to see such, then curate your experiences.