Yes. That is super hard from a human perspective and I agree that it would be nice if the comments were less awful. Also, we're not asking you (or anyone) to react in an emotionless manner—quite the opposite. The trick is to express the emotions in a somewhat different way - more sharing, less discharging, if that makes sense.
(And again, I'm not talking about you personally - it applies just as much to me and everyone here.)
As for the article - I only skimmed it in the most superficial way but I think "what it's like to be in prison in Japan (from a Westerner's point of view)" was more or less certain to be interesting to this community, which is insatiable for things it hasn't heard about before.
Btw - you absolutely don't have to answer this, but are you Japanese? That's what the phrase "bashing your country as a whole" seemed to imply to me, and for some reason I was surprised. I guess it's because I talk a lot with HN's Japanese users (mostly by email) and your mode of expression is somehow different. Normally I don't pry like this, so feel free not to respond!