> If you don’t like the way a subreddit is run then you can make another one, and if you are sufficiently better then people will switch
That's much easier said than done - say you don't like the moderation or content of /r/gaming, how are you going to spread the word about your new subreddit? It won't have as good a name as /r/gaming, it's not a default sub so it's more difficult to find, and you might find that mentions of your subreddit make it onto a powermod blacklist, ensuring you can't even link to it from other subreddits.
How can Reddit have the concept of default subreddits yet allow them to be run by random, unvetted people? For me being default includes some kind of guarantee of quality and approval by Reddit, yet most of these default subreddits are going dark!