The reasons for defederating: (...) our reason for defederating, by and large, boils down to: these two instances’ open registration policy, which is

The reasons for defederating: (...) our reason for defederating, by and large, boils down to: these two instances’ open registration policy, which is extremely problematic for us given how federation works and how trivial it makes trolling, harassment, and other undesirable behavior; the disproportionate number of moderator actions we take against users of these two instances, and the general amount of time we have to dedicate to bad actors on those two instances; our need to preserve not only a moderated community but a vibe and general feeling this is actually a safe space for our users to participate in; and the reality that fulfilling our ethos is simply not possible when we not only have to account for our own users but have to account for literally tens of thousands of new, completely unvetted users, some of whom explicitly see spaces like this as desirable to troll and disrupt and others of whom simply don’t care about what our instance stands for