Personally I am fine using the tools available to me right now to filter and block things I do not want to see. And I assume with the upcoming personal ability to block entire instances, the brigading issue will resolve itself too. So in that regard, keeping them federated or not won’t make much of a difference.

However… The Kremlin propaganda stuff you talk about seems to be quite prevalent. And while they may not all choose to actively brigade, when they show up in thread comments, they tend to completely dominate the thread and specifically all seem to post very similar things. And while I have seen plenty of levelheaded comments from their users, i have also seen a ton of trolling as well.

So again I don’t know if defederation is the solution. I think there’s a place for discussion of people with differing opinions, and curating a completely safe space doesn’t do anyone any real favors. But when interaction goes beyond polite discourse it just breeds hostility and makes places toxic. And at the very least, some of their views and the way they choose to interact with others has been creating a feeling of toxicity to the point that I have seen many many users sick of that instance and to the point that posts like these seemingly need to be made.