Bots, just like other tools, can be used to do "good" things. In those cases the bot is good. The corollary of that suggests that they can be "bad" as well. So a bot in an inactive position is neutral, but once it's implementation shows itself to be good/bad it has become good/bad.

I don't have an issue with your bots upvoting the authors you have chosen to support, just so we're clear.