This may not be enough. Reddit has multiple examples of toxic communities that ended up requiring outside intervention (quarantines, bans).

With Lemmy’s federated nature, we could imagine a tiered moderation system:

1. Each community moderate their users
2. Each individual instance moderate/restrict a community if it fails moderation level 1.
3. Groups of instances (federation) restrict/disconnect from an instance if it fails moderation at level 1+2.