The funny thing is that many of us believe that we have acquired our own values, perspectives, opinions, and preferences by some kind of well-thought-out, independent analysis. The Matthew Effect is just another sign that we are so much a prisoner of our psychology.
I found it interesting that I had come to this conclusion as to how Medium truly works about a year ago. But my thinking was not as refined as this article and original researchers.
But I would not be surprised there are psychologists on Medium picking the writers who are more likely keep us engaged.