The last paragraph is where it's all given away... "this isn't gallavanting old fartism..." that's the entire point, it is gallavanting old fartism.
It's a bitter guy in his 40-50-60's wondering why he's not cool any more and finding someone to be his scape goat. The fact of the matter is, those kids are cool, and he's not (not that you'd neccessarily want to be that sort of cool, i know i don't). I'm sure he remebers being cool and how much fun it was at the time. Now where is he? wearing sweater vests and driving a plymouth voyager i'm sure. The simple truth is after 30-40 (it varys from person to person) unless youre a rockstar or a professional athlete, it's physically impossible to be cool anymore. Wich has alot of people up in arms. There still the same people, it's just cool that's changed. Cool is defined by teens, it's intrinsically linked to them and there generation and once it's lost, it can never be regained. People need to learn to move on, to be content in their middle aged comfort and security and leave being cool to the teens.
No matter how stupid you think fashions (clothes, cars, whatever) of today are, take a good look back at when you were a teen, and youre realize that you were just as stupid, but when it all boils down to it, cool.