How has your country (you must be American) distinguished itself by doing these same core social and psychological issues? Or are Americans stubborn and ignorant?
America is home to thousands if not millions of volunteer groups, social change movements, debates and university studies on these sorts of situations. There isn't any sort of central government ministry dealing with stuff like this, but large independent swathes of society do try to work to establish where these problems come from, and how best to deal with them.
If anything, Americans would suffer more from fatigue by being bombarded with tons of national social issues to genuinely worry about and try to work against, rather than remaining in denial about them.
In part of the USA, the tradition of churches tending to the flock is still going strong. Also, the local gathering place where folks swap news and talk (the bakery in the small town I'm in) is still a fixture.
I was in hospital with my gran (born in 1922) in ICU (a pulse of 33bpm - and turns out she had kidney failure too), when alone with me she was gripping my hand and saying "this is the worst I have ever felt", when a few minutes later the doctor arrive d and asked "how are you feeling?" she replied "I'm fine thank you".
I think the current crop of younger people will be more vocal, if their sense of entitlement about their current lives is anything to go by.
Not stoic so much, but my uk wife sliced her hand open on a can of cat food (in the US). 3 inch gash right across her palm. Bleeding. A lot. Wrapped it up in towel and said "we're going to the emergency room, get in the car". She replied "oh no, I don't want to bother them, they might be busy."
Serious question: What gave you the impression he was American? I assumed the opposite -- that only a Japanese person, or at least the child of first-generation Japanese immigrants, would have made that post.