Thank you for sharing the documentary. I think I'm able to understand more of the human condition, in a sense.
That said, like the commentor above, I feel like the hint that they're trying to "save lives" will run counter to what they're trying to achieve, as instead of providing a way of leaving (for those who found life to be too unbearable) or even changing a broken system, too often the "blame" is put onto the reclused for giving up on society, and then double down on trying to make them "productive members of society". It seems like for developed or developing nations (not exclusive to Japan), the society that has built up to this point has became more and more hostile for many to live due to various factors, monetary or otherwise. All the technological feats and insights from history gained from our species seemed to have progressed us as much as it imprisoned us all. But I digress.
Personally, my values has shifted to "reducing suffering" from "saving lives" after realizing what a mess this world is. So there's my bias in my take I suppose. It'll be a shot in hell if globally people managed to be more compassionate or empathetic, but I've got no faith in that anymore.
(sorry if went off-topic or anything)