Earlier quoted context omitted.
I have to remind myself not to read too much into such things, for three reasons that we all know, but which may bear repeating to ourselves: 1. Open source is global, and not everyone is a native speaker of English. 2. Among English speakers, not everyone has the same cultural conventions and nuances. Even within US cities, you can drive 15 minutes, and find very different conventions. And culture in Boston isn't th…
That's an essential point. At the same time the interpretation isn't completely random or unpredictable; we're all humans, with the same emotions, the same physiological expressions of them, and the same internal responses to others' emotions. If you yell at someone anywhere, you can expect a certain range of emotional responses.
I'm of xUSSR descent, and sometimes when I see a group of chinese colleagues speaking together loudly, it is very weird to me, as soometimes they are so loud that if it was in Russian it would mean that the brawl could start any second. It is hard to judge sometimes.
Even in written communication it is was told to me many times that many Russians, especially those with B1/B2 levels, as well as Jewish people are extremely direct, and it may be perceived as native speakers as rude, although it isn't meant to.