

I understand the feeling, but I think this outcome is probably the best we could hope for, given the situation. If he had tried to impose fines or imprisonment, one of the higher courts would probably have intervened and the sentencing would never have happened.
Lived in Japan for many years, came back to the USA for many of the reasons you touch on. I knew a few foreigners who had non-English-teacher type jobs, but mostly, it was English teacher or English juku owner. The systemic issues, for young Japanese and for foreigners, in Japan really need to be dealt with if they have any hope of slowing their population decline. So, not going to happen.
Japan is never going to have enough immigration to significantly impact the population decline. Even back in the early 2000s, it would have taken millions of immigrants a year. Now, forget about it.
Living in inaka is not bad but not great either, for most people. So, tiny apartments in or near big cities or large houses in the middle of nowhere are pretty much the choices. Jobs in inaka? Fisherman, elderly care, sakaya, maybe some other generic retail for the eldest sons who couldn’t escape. And, of course, government jobs.
Re: media hype, yes there are still young people. But not enough. Societies need 2.1(-ish) children per couple to maintain population equilibrium. Japan, South Korea, Italy, and several other wealthy nations are way below that. Add in the Japanese propensity to live for a long time, and Logan’s Run becomes more and more thinkable each year. When the population pyramid becomes whatever shape parallel lines || are, the economics of a modern, wealthy society break down.
I gave a PD session for Japanese teachers back in like 2004 or so about why learning English would be helpful, because they might end up with a lot of immigrant children in their classes. (Or, I didn’t say, because you could use your English skills to look for jobs outside of Japan.) Of course, immigration barely happened, and many of those teachers are probably close to retirement age by now. So, my bad, I guess. Someone should do that PD today, because the situation is even worse now.