I guess they are posting (not even creating) garbage because that's the best cost-benefit choise if someone wants to maximize rewards.

I wrote a fairly good content 10 days ago, took me 3 hours of research and writing plus review and linking in facebook and twitter. I had almost 100 views and 10 upvotes, made 50 cents.
Two days after that, as a test, I postes a youtube video of a song that I like, absolutly no maketing or anything involved and got 15 views and 1 dólar reward.

So, if my goal was to maximize my reawards, the best option would be to just post tons of garbage stuff hoping I can get somone to vote on them or invest time and energy on a single quality post? People say that making a quality post will get you more followers and on the long tun will be better, but I belive there is a problem in the way things are done now.

One option would be to limit the dayly posts by rep, so the quality content wouldn't be lost amont tons of garbage.