I like that the "communities" NIP feels familiar compared to how

subreddits work, but it has one of the biggest weaknesses (in my

opinion) of the Reddit model: moderators of communities/subreddits that

effectively act as feudal lords.

If I want to

follow posts about a topic by using hashtags, I have the freedom to see

all posts tagged with that hashtag, sort them how I want in my feed,

mute posts from specific people, etc.

With the

communities/subreddit model, I'm only able to see posts about a topic if

the moderator of the community has deemed that post is allowed.

This

is kind of the same weakness of the fediverse, because it removes the

centralized power that a platform owner like Reddit or Twitter has, but

it simply shifts that power down one level and puts it in the hands of

mods or instance owners.