So true, I still find so weird when americans write something like "and then everyone in the movie theater started screaming and cheering when X happened"

Like WTF? You shut up and watch the movie in a movie theater, it is not a stadium!

everybody turns towards you, frozen in disgust at what you're doing

that's not the case in India, you literally can't hear movies if you want to watch it on the first show of the first day. actually it's better avoiding the first day's shows

I am American in the US, I go to the movies every month or two and I've never been in a movie theater where people cheered/clapped at the screen.