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I think (my own personal opinion) is that Big Trouble in Little China did something so crazy and wacky that no one actually recognised it at the time.
If you look at the film from a certain perspective, Jack Burton was the sidekick, and Wang was the main character. And they just filmed it from the perspective of the sidekick who thinks he’s the main character, which is a conceit I’ve always adored.
Because -isms exist in a binary world (sexism, racism, etc…)
Any increase in visibility for whatever minority they happen to hate, is a decrease in visibility for them (in their feeble transactional little minds) and it drives them bonkers.