I do agree that there needs to be quality moderation for upvote bots, but it only works if ALL of them offer it, or if no one delegates to the ones that don't have some kind of moderation scheme in place.

One way to deal with shotpost upvoters is require registration and account "approval" process to prevent shitposter accounts from using the votebot. But again, that only works if ALL the teams running bots started doing that.