I'm sure it must have nothing at all to do with cultural stigma. If that were true we'd see signs of mental struggles in their home countries. In the US I'm sure all the model minority bullshit people project on them doesn't cause them any extra pressure or anxiety right?

Asian Americans are so successful that they certainly must not have disproportionately higher rates of suicide right? That might be a sign of some "impairment" going unaddressed! Or maybe you see the rate at which they're killing themselves as yet another metric of success? Those scrappy East Asians are just so good at doing stuff!