sorry i might have badly written,
but if post rewards are logarithmic, then posts with lots of bot votes will have very small curation rewards as less gets split among more people.

if a high stake holder were to vote original quality content that does not get bot armies, then he would still benefit from the linearity of log(1+x) limit near 0 and have comparably more curation rewards but gets incentivised to reward hidden quality posts that are not suggested by trending.