You seem to have a weird view on this, which is sad considering how long you've been here. This is how Hive works, you have upvote mana and downvote mana, use both wisely and well to protect the reward pool so deserving posts get the right rewards. You can't be okay with getting blind 90+ votes by 2 accounts but not be okay with another account adjusting it down a little to give you a fair reward. If this drives people away then we probably wouldn't want those people to be here in the first place.
It's one thing if haejin/rancho decide to vote on a new account and the post is of high quality and effort to deserve the rewards, another if they vote on lower effort posts that take them to trending - much worse look for hive than any downvote on those posts could.