There's tons of reasons to want to buy hive stake and use it well in the form of curation and attention. Take a look at @theycallmedan who has bought millions of Hive and curates responsibly, no one has an issue with how he uses his stake and he's built many tools and services and big projects that may drive hive forward in many ways and the community respects and rewards him in many different ways.
He's not selling votes however nor buying votes. How is that difficult to comprehend?
I don't know your full history as to what made you leave hive, I glanced at the post you linked mentions of hivewatchers and they may not be perfect, no one is, but blatantly ignoring the one thing that makes hive unique and abusing it for your own gain and pointing towards people trying to combat such activity for the health of the platform as the reason token price is dropping is straight up delusion. Best of luck.