I guess that you could say @haejin is "5.9%" generous. On a scale of 1 -100, where most people give away a much higher percentage of upvotes, I think this situation is not good for SteemIt and not in the spirit of the platform. This level of self-interest is borderline narcissism.
Considering that haejin has fully exploited & leveraged just about every single thing on the SteemIt platform that he possibly can, I think it's safe to say that he's not a Whale - he is a megalodon.
Just to be honest, he is the one who is in the focus right now, but i believe that enough other people do this on a way lower level. I still think, that self voting should be limited somehow, maybe by percentage or disabling it at certain steem power numbers.
I think the best thing to do is something along the lines of a cap on self upvotes. Or, link the ability to self-upvote with how much you curate and upvote other people's posts. A 50/50 split would create more of a win/win situation. You can only grow as much as you help other people to grow. This would, at the very least, create many symbiotic relationships where people can only do their best by working with other people. However, duplicate accounts would have to be identified to prevent abuse. I don't know if that can be done.
Just to be honest, he ist to one who is in the focus, but i believe hat enough other people do this on a way lower level. I still think, that self voting should be limited somehow, maybe by percentage or disabling it at certain steem power numbers.