Blackpill is everywhere, if you consider genetic determinism as one of the core pillars.
Fucking Harry Potter has genes determine who gets to cast magic and who doesn't. Be born into the magical society or be born a muggle.
Movies frequently use people's innate disgust at ugly people to quickly establish who the villain is and to get people to really hate them. Modern Mad Max is a good example. Beautiful women = innocent victims -> need saving. Disgusting, ugly, fat, midget men -> villains, kill 'em.
They did a Beauty and the Beast remake and cast a hot chad as the beast, but gave him a bit of scaring to make him look "monstrous". Even in Stories about uglyness no one wants to see an actually hideous actor.
Remember Doctor House had an episode where House, Wilson and Chase went speed dating, with House betting Chase 100$ that Chase would get the most numbers because he's by far the hottest, no matter what he said about himself. So Chase started telling his speed dates about how he lives with parents, how he is broke and has no job, etc., ending with him getting the most female attention and losing 100$.
In a sense movie casting itself is a blackpill. Who fits what role is largely about how they look, most heroes are beautiful / hot or at least reasonably attractive. Deformed freaks are far more common amongst the villain.
Same with typical plot points. The male hero has to earn the female love interest's affection, he has to prove himself worthy of her love, not the other way around. Men are expandable, they make the ultimate sacrifice, paying with their own life for others to survive. If you want to paint someone as a villain, if you want the audience to dislike them, make the character hurt or mistreat a child, dog or woman. Not a man though. That's noticably less effective.
Etc.Etc. Can't escape BP in entertainment, it is everywhere.
