Your first three problems also apply to Italy. Why don't we read as much about it? I find it bizarre. (South) Korea, the same. Non-Asians just love to focus on the extreme positive and negative aspects of modern Japanese society; it is weird.
You are correct that Japan isn't the only nation with large problems, particularly around declining populations. The thrust of my initial comment is that no nation is perfect and thoughts of "why aren't we just like that nation" are a little silly.
It's very easy to come up with a few bullet points of the big problems of a nation. Just like it's easy to generate such bullet points about the positives of a nation.
There was never a corresponding image of Italy and almost nobody in the US was talking about South Korean society at all 15 years ago.
That’s not a thing.