I believe that the idea for the 50/50 split of HF21 is to get more people to actually curate instead of just selling their voting power to a bot. I know that a lot of steemians either don't want to manually curate, or don't have time for it, but the 50/50 split gives manual curators the opportunity to earn more steem for their curation efforts. It's for that reason that I'm not upset with the coming hardfork.
That's the idea. I hope we get to this point where people actually begin to manually curate, because that would be incredible for the blockchain when it comes to getting new users and getting them to stay here.