I said it when they first defederated Hexbear. If you block the left in any space you create you are drastically shifting your community to the right, and this causes nazi bar syndrome where slowly but surely everyone who is uncomfortable with being around so many nazis gets pushed into leaving.
What remains are the nazis and the people that are comfortable around the nazis. Some of those people are oblivious apolitical idiots that couldn't tell a mask-on nazi from anyone else, some are not.
Liberals consistently cause their spaces to lurch to the far right by doing mccarthyism against leftists. Then they complain about it being far right with absolutely no self awareness about what caused it.