In the physical world, if I have 10 humans beat me up, I'm still hurt. If I have 10 physical robots beat me up, it still hurts. Therefore, it's irrelevant if they are 10 individual beings vs bots. They act as his "attack dogs."
It matters, maybe not in this case, but in general because here, it makes no difference whether you were downvoted/upvoted 50 times or once. All that matters is the SP of the person downvoting you. So whether Bernie does it from 50 accounts or a single account makes very little difference. I'm not arguing with you. I'm just explaining that because it is not always apparent.
Youtube and other platforms have downvotes used to do the same thing.
Not really. Here, downvotes are used to reward monetary funds meaning that it is perfectly acceptable and even encouraged to downvote good works for no other reason than because you feel that the rewards were too much.
In order to fix a problem, you have to understand the problem. Your proposed system only addresses a single aspect of a multi-faceted problem. I just wanted to relay some of the facts.