Yeah… I have to say that boost looks highly concentrated among a few people whose themes and writing are less about creative content and more about marketing or meta content. I don't see it as any more egalitarian than the old top writer nods.

Those meta posts and marketing posts get the lion's share of distribution. I avoid those kinds of posts for the most part. But, they still are the main thing in my feed — even when I go specifically looking for poetry or fiction. There's no control over the use of those tags, so you get folks using a fiction or poetry tag; then you open it and it's frelling SEO stuff.