I do agree with you, even tho I have not that much Steemit experience since I've only joined by about 3 weeks.
But the thing is that.. Let them do their shitty posting. It's just a little annoying that I have to search for quality content through them. But I believe that they will eventually see that they're not gaining anything with those low quality posts, and will either stop posting, or start posting some meaningful stuff.
I believe we should care about our own posting, and promote people with quality posts. The rest will flush out in time, by itself.
Anyway, nice post. Thanks for sharing :)