The people who react angrily to someone asking them to keep their noise down are very likely the same people who react angrily to someone interrupting their call or entertainment with loud noises, especially noises that just repeat what they're saying or watching. I agree social pressure is a real thing, but if you don't have the courage to ask them to kindly keep the volume down, how would you have the courage to do this?
These questions have pretty straightforward answers. No, the first one isn’t a reasonable assumption because people react VERY differently to passive vs direct action. This isn’t controversial. As for your second one, easy, because one takes less “courage” than the other.
I also disagree with the entire premise that it’s about courage in the first place. You can have the courage but decide the other method simply has less downsides. No need to pretend otherwise.
