The time I spent interacting with lemmygrad, it seemed to me that although they were completely misinformed (Stalin denial and such) they believed what they were saying and weren't actively and knowingly trying to hurt people. They believe the Chinese government is good and heading in the right direction for example. Their goal, while heavily misinformed, is to make life better for people. Not to spread hate and discrimination and violence. It's a lot more gray area imo. I highly doubt the people spreading shit through exploding heads don't know what they're posting is bs. I could be wrong though. Regardless, I'd understand if the decision was made to defederate with them, but they're not going around saying "kill trans people, kill the Jews" to my knowledge. I haven't seen hexabear yet

Edit: I went back to lemmygrad to take a look, it's worse than it was last time I was there. What I said still applies, but to a much lesser degree