I think Parasite depicted how Asians see classes as they are extremely class oriented societies in every sphere of their life.
It’s also how Hollywood celebrities live in their bubble.....which is why they celebrated the movie.
The basement dweller impaling the art grifter, then the dad going off on the entrepreneur just cemented the “class warfare” shtick.
Also the cheesy "art house" tryhard symbolism with the various stairwells (Know your role/place) and the stupid stone symbolizing hope.