I feel you - I'm really tired of the hierarchy on these websites, too. I get it, I understand why they do it, but it doesn't help new writers and less-known writers want to be on the site or promote it.
I also noticed the "Premium" stories get to be in cross genres, while the non "Premium" stories aren't. If you write Fantasy, then it's only in Fantasy. While the Premium stories will be in Fantasy, Drama, Slice of Life, etc.
Sadly, there isn't much we can do it about though. Ultimately, our success on these sites depends on our readers, much like a business depends on their customers and their money. Our success is determined by our readers' reads, likes, and comments.