Hi, there is no free speech policy on lemm.ee, we have very strict moderation when it comes to our rules. We regularly permaban users for breaking our instance rules. We simply don’t use defederation as a moderation tool, preferring other tools like user bans, for reasons outlined here: https://lemm.ee/post/35472386
It was the result of a DoS attack yesterday, should be mitigated & recovering now.