That theory doesn’t make much sense to me. The military conflicts have been political losers for Biden. Polling consistently shows that Americans believe (for some insane reason) that the Ukraine and Gaza conflicts wouldn’t have happened under Trump. Gaza in particular has split Biden’s base. The best thing that could happen for Biden is if all the conflicts end before the election.
These countries have similarities, but this seems more like simplistic stereotypes and generalizations.
South Korea’s suicide rate is almost double that of Japan’s. Japan has a lower suicide rate than the US, and similar to European countries like Sweden.
South Koreans work some of the longest hours of any rich country. They’re closer to India and Mexico than Europe. The Japanese work fewer hours than the US. Yes, Japanese people work too much, but I think Americans don’t realize that they work too much too.