Nothing is 100% true. There are lot of instances where a genius programmer never gets a job while the guy from a coding bootcamp gets offers all over just because he has a blog somewhere. Yet, the general consensus is that good programmers are paid more than bad programmers.

Memes make more because most people enjoy them. They may not be valuable to you, but it's valuable to someone. Maybe some of them have gamed the system. But the consensus is that Steemit rewards quality and the evidence is that the eco-system is sustainable.