is also an factual statement but will get you downvoted because it sounds like the kind of noises the “others” would make.
That’s because people don’t say things just randomly, they usually have a point or a conclusion they are trying to get to. When someone sees something like that, they don’t downvote because it’s not factual, but because of the implied point.
Your implied point here is that both sides are equally at fault. You didn’t say that and I would bet you don’t think that, but that’s not how your comment reads.
It’s similar to the BLM and the all lives matter response. Yes that is factually correct, but saying it in this context and time implies less or no attention should be given to the topic at hand.