But we are not handicapping top posters. Rather, top posters benefit more in my proposition.

The idea is that top posters do not need to be discovered for curators, thus the work that the curators did is not as valuable. Therefore the poster should get more of the profit. Whereas for an unestablished poster, they would get less profit from each successful post, but they have a higher chance to be discovered because curators now have a better incentive to try and find these hidden posts.