I think SN haves it's own category. It's simple and organic, and that's pleasant at the moment of writing. Also, SN can scale at a bigger scale, since it's more of a social network like reddit, rather than a blog feed like medium. And once a critic mass of users is achieved, it will be a more fertile terrain for people that wants to devote to writing. It's natural and organic from start to end. I really think it should stay that way.