What difference does it make what people write here? We are not writing for a newspaper or for book that will get published. In that sense there is no such thing as productivity here. The product that Steemit offers, is that people like to be here. Its matterless if they come for philosophy or for funny videos - as long as they come.
Since the funding of Steemit is entirely based on the creation of Steem, it can work. Assumed that there is not too much Steem handed out too quickly, of course.