Yes. But.
In order for whatever service - be it a product, a site, whatever it is - to grow, it's the idiots' money you want to get.
Idiots are always the majority, so shutting them out of a product or service will do nothing but ensure that said product or service will forever remain niche.
You need to come up with ways to lure them in.
Yes. But. 😀
Steemit is already a niche. "We" are an elite network of the 5% content creators of all internet users. "We" are content circle jerkers.
I'm still not convinced, that this will be anything more than that in the future. Maybe it's enough, that Steemit is a blogging platform?