I have not posted here in a while
the correct way to do decentralized moderation:
anyone can offer to moderate for anyone else, and anyone can request others moderate for them.
moderation consists of tagging content in ways that are requested by the user of the moderation
the requesting user then can filter out posts, or not, based on the tags and who supplied them, in their client app
tagging can be done by hand if desired, and also by software, this is entirely up to the moderator