I think it's a more spread out and fair distribution than 100% to the poster.
I am not sure it is fairer. The commenters didn't create the article, but get earnings from it. This makes sense if no one can reward the comments, but o think people should also vote good comments more often too, and not just the original poster. Showing sone vote appreciation, even if low value has an impact on commenters.
RE: Incentive to Comment