I'd strongly reccommend to check the example I cited on the post as that is exactly what we aim to counter.

Citing @acidyo's comment about this topic: https://steemit.com/abuse/@tarazkp/downvoting-is-sweetsss

"This one has been operating for over a year or so on the same users, almost 0 comments from the accounts, no interaction, only powerdowns and selloffs, there are many still doing similar things but we figured we'd start with one of the biggest and most obvious one for now."

Of course voting for a favorite account(s) has nothing wrong.

That's exactly why I mentioned the key words "Circle voting farm", as in, people who farm Steem by voting posts/comments like the ones featured in the post linked.

That being said, we will be very careful when assesing if/when to cast a downvote as it is a delicate matter as you well mention.

Thanks for your input!