People can do what they want.
Yes, they can.
but they shouldn't be angry if people don't vote for them, or even downvote them.
Yet they are. I know one person recently who powered down because they got an unfollow from an account that used to support them. They went full spam too with low quality content. Pathetic.
If they think extractors are doing something unhealthy for Hive, they are within their rights to vote against those.
You are in the minority on this opinion. Welcome :)