Because it may not be true for other brehs.
But if we look at is as a big rampant problem, it is because too many people treat the issue as an original sin put on that person or group and seek to indict and punish that person disproportionately rather than seeking to find and and tackle the root of the very system that, often by their own admission, is the true cause of it. Don't believe me? If we blame white supremacy as the cause of this issue, as we often rightfully do, why is my post one of, if not the first one mentioning it in all the posts in this thread? My point exactly. This is why some have a hard time taking it seriously in the first place.
In any case, too many people come to these arguments looking to hear the opinions rattling around in their head to be reflected back at them, only to call it "truth" and variations of that. This is why these conversations are pointless with some people.