What we want is curation rewards for actual, significant curation to be higher. Camping for the top posters and waiting to vote (whether after 5-10 minutes or immediately) is not the quality curation that we want to reward humans for doing. I'm perfectly happy letting bots get that (relatively small) portion of the pool and letting humans go elsewhere to curate harder-to-find content.

This situation was very different in the early days with less content, fewer voters, and n^2 rewards. In that environment, the vast majority of the rewards (both posting and curation) went to just a tiny handful of posts from a tiny handful of authors. That's no longer the case.