Oh please, every country's respective animators, comic anime/manga artist, or video game creators are all guilty of this. The anime/manga industry can be even worse with this at times. It's not just a one country thing.
The manga convention is indeed typical of this. But I really gre up with comic books where faces were much more diverse, and where characters weren't recognized strictly through costumes or hairstyles. Franquin, Uderzo, Morris, Peyo, Lambil in their cartoonish styles. Hergé. But also a bit more more towards realism, Uderzo aswell, Pratt, Rosinski, Hermann (in his good days), etc.
So of course, it's easier when you can afford some amount of caricature, and accentuate traits differences. But on one hand, mangas show that stylized designs don't necessarily imply diversity, and on the other hand you can have realisty faces that are structured as differently from each others as, well, they are in reality.
But what it takes is to dare drawing outside of the readymade formulas of, say, obligatory chiseled rectanglular what-a-man-should-look-like faces. Superhero comics are just series of personality-void duplicates of "ideal physical shapes", drawn with no regard for a character. They're just the repeated copy of some sort of leonardo da vinci man archetype. It could be drawn by a machine. It's exactly what
this post's video was about, but afflied to faces. Same with women. They are all the same carbon copies with different names or outfits, because they are drawn in a manara mindset, as opposed to a hugo pratt mindset (two artists that I absolutely oppose in terms of approaches to female beauty). In other words : absolutely soul-less. Industrial.
And that's the point, because it's an industry, more than anywhere else. The machine must vomit as many products as possible, by as many artists as possible, in a complete disconnect with authorship (a company's) or personality. Just like animated adaptations have to be simplified, codified, so that many artists can work on the cells' assembly lines, superhero characters have to be replicated (and thus replicable) by a quantity of artists, therefore come down to their lowest denominator (the prethought neutral comics face formula). The result is : whole books whose characters are distinguised only by outside markers. Certainly a symbiosis with the very concept of superheroes and spandex uniforms. Copy paste the same shapoe and paint it differently, a machine (mechanical, digital or human) can do it.
Even when left to their own designs, artists have styles, and can easily repeat their features simply because it's the one way they learnt to draw a realistic face (again, Vance, Martin, etc). They can be self-indulgent. But DC/Marvel companies make of this flaw a commercial virtue. And its public is used to it. I just find it cringey, whichever the country.
And I don't know where it's worse. Wherever it comes from the artist's own limitation or wherever it comes from its workplace constraints.
Anyway, videogames have more excuses - and it wasn't an issue before these high res, high fidelity graphics. It didn't make sense to complain about it in, say, the sierra-on-line parser or the lucasarts point and click era, where faces were pixelated rectangles. It became odd with portraits, sometimes randomly generaed without differing much from each others (thinking of Frontier Elite). It becomes really odd in modern 3D games that try to look like movies, have full design freedom (and a variety of handcrafted environments) and end up looking like a cheap with with the same extra re-used in every scene. Like the Plan 9 videogame adaptation.