I take your point, but to a large extent the value of the subreddit is in the name since it makes it easy for people to organically find the right space for the content they want. Domain names are the same. For example, for content local to New York City, going to /r/nyc was my first guess.
/r/UncleBens can claim to have developed their own thing, but not the obvious ones like /r/Apple, etc.