The thing with Steemit being "decentralized" is that WE are "the staff." There is no "they" to come and police things here... all such efforts are community driven. People put groups and guilds together and try to create the type of environment they hope Steemit will thrive under. And some? They just don't care.

HubPages uses teams of readers to look at every single submission to determine whether it will be "featured" (and thus eligible to earn rewards) or "not featured," in which case it can be seen and read, but won't earn rewards for "quality reasons." Currently, I think it's about 15% of the content that ends up being "featured."