I don't like them but they are not the end of the world if you get a downvote. It happens in life and should be treated as a small problem.
Where the problem lies for me is in the zeroing of rewards by bigger accounts due to their large stake. If they disagree with a post then downvoting a few percent of a post would show they don't agree. Using their huge stake to wipe away the rewards from a smaller account is akin to bullying in my opinion.
I remember being targeted by Haejin back in the day for weeks as a minnow account. I think that i downvoted his account for 2c on a $50 post and then he spent weeks zeroing every post that i made. It was enough to drive away a lot of users but I managed to stick it out and stay active.
It's the same now with hivewatchers, blocktrades and some of the other og accounts that go out and nuke smaller accounts and drive them away.
A small downvote shows dissatisfaction, nuking accounts kills the chain. We have lost so many users over how posts are rewarded that we have killed the value of the token. If the large stakeholders had refrained from downvoting small accounts we could have 5-10x the amount of users here right now and a thriving economy.
It's short sighted and still happening.