So um I just heard something that sets off enormous flashing screaming alarms: apparently Pleroma not only doesn't allow their users to block people, it doesn't allow people on non-Pleroma instances to block Pleroma users (they prefer to treat "block" as a simple force-unfollow).
I hope this isn't true, but if it is, it moves Pleroma from "has questionable developers" to "actively dangerous" in my mind.