the quality of content on Steemit is incredible
Is it the quality of intellectualism and prose, or predominantly the quality that the content matches your interests?
Both. The assumption in your question seems to be that there is some kind of problem with finding a niche, or having a site that's more popular with certain types of people. There isn't. Actually, that's a good thing, because it helps something become popular faster, and more of those types of people will want to join.
It would be a problem if that "Western tinfoil hat, hippie/druggie, nerd backslapping while extracting $ from the collective TO DA MOON" niche is too small to scale the merchant ecosystem that they are relying on to create enough demand for Steem tokens so that we can afford to pay bloggers without imploding the value of the tokens.
Nevertheless, the range of content on Steemit is also quite wide. People write here talking about art, philosophy, psychology, anarchy, personal secrets, economics. If you really think it's so limited, perhaps you'd like me to link you to a few things which demonstrate the diversity.
I am not interested to read about someone peering at their navel, which is how I characterize most of the content on Steem.
I am reading a lot of it everyday, it is nearly all amateurish crap that I wouldn't read if I wasn't investigating Steem. The great bloggers stand far above, and I read them only when I need to, because they have something important to say. I don't have time to whirl away browsing amateurish blogs daily for entertainment.