If it had been an American teenager, I doubt there would have been an article posted at all. But if there had been, I doubt such a comment would be downvoted.

I feel like a similar proportion of teenagers from Israel and America are idiots like this one. I remember many teenagers from my highschool (Canada) who would be this kind of dumb. Based on this, I don't see why people would react differently to my comment, though maybe it'd come across different if the reader is American, not sure. (I think I'd make the same inference about Canadian high schooler as another country's though.)

...that said, I do agree with you. I have noticed for instance that Japanese high schoolers in public seem to be incredibly polite compared to Canadian ones. You can make a small inference perhaps about the high schools from a country based on a single point of data like this. But -- I don't think this really says very much about the disposition toward Nazism (of the original German trappings) in the general Israeli public.