Haejin was spam posting 10x a day and 100% self voting with stake that does not belong to him. That behavior has changed to voting various authors.
That was the standard before the change of 25/75 and Free Dvs; instead of people voting others, they either sold their vote or self voted. Now people vote for others because it's more profitable. Now I even said PoB is not finished in my post and that DVs could clearly be looked at and reworked a bit.
In any system, people will always do what is best for them. That is why Bitcoin is so effective because it pays better to do good than bad. If on Bitcoin it paid better to do badly than good, we wouldn't have a Bitcoin; it would have died a long time ago. So no matter what you do in these systems, you need to put self-interest above all else, and that self-interest has to be in the best interest of the community. You incentivize doing good, reward that behavior the best, and reduce/penalize abuse. It's that simple with these governance models if you play on human virtue, the good actors get diluted by the bad actors and eventually become irrelevant.
I'll respond to your DV issues later today, as this is a long post that requires a long answer if I want to debate you on this topic.