>>512033874
That's like asking why blind guys don't complain about ugly women. Blacks have no conception of society or history beyond simple tropes and power dynamics, how could they objectively judge whether or not muslims are degrading society? To them, it's a mere coincidence that white people lived in England for 2000+ years; the roads, buildings and infrastructure just magically appeared and there's no reason why it exists. Why think about it? I'm finna head to the corna sto to get a fohty and some swishas.
You're asking a people with an average IQ of 80 (even less if they're congo niggers fresh off the boat), who can't remember events from this morning or plan for tomorrow to notice the gradual cultural shift happening with unfettered muslim immigration. It's too high a bar for them.