The moderators are just users though, oftentimes ones who just got there first. If you don't like the vision for any given subreddit you can create your own with more lax moderation. There's plenty of stories where subs split off because of moderation differences and ended up becoming bigger than their parent. See /r/gameofthrones vs /r/freefolk for an example.

Personally I find that the more strictly a subreddit is moderated, the better it tends to be.