Thank you @ricko66 for this genuine comment. :)
You can't earn a shit by upvoting yourself if you don't have hell a lot of steem power. I can't understand that kind of people, to be honest.
And you are right - it's nothing worth to get angry about it. I also ignored them, but I think it is time to spread awareness to them directly. Maybe then they'll understand that they behavior is not proper.
Yes, the peoples who are upvoting themselves are pretty high already and they do have some strong voting power. I think yes it is time to make them aware that is why I suggest to downvoting the SSB. They may learn the hard way that this kind of behaviors isn't make any good.