I don’t think it’s the chinese, I see it more as a way, a rather very capitalist way, of widening the market base of these movies by having literally anyone join the ship. Nothing wrong, nothing well, anyone can identify with any character at somepoint in their lives.
All stereotypes are flawed, and bad. But to a certain extent they give you a structure to explain your world. Good, evil, women, man, master, teacher, etc.
Tear down that structure and you will remain with something new and different but not necessary a better world; a sort of absolute homogenic soup where every individual can’t position him/herself in a category. What binds them then? Only market.
There’s nothing wrong with anything as long as you keep buying.