I haven't seen the pattern you've described, but I have noticed that many downvotes seem to come to in twos. It always strikes me as a bit suspicious when that

I haven't seen the pattern you've described, but I have noticed that many downvotes seem to come to in twos. It always strikes me as a bit suspicious when that happens suddenly, but I try to avoid paying too much attention to the score because I consider it a toxic antipattern.