HN commenters, the more visible ones, are not that young (by young I presume you mean anywhere in the 20s).

https://news.ycombinator.com/leaders

I think the median age in the top 10, for example, is around 40.

This reminded me of a chunk from an [interview with Linus Torvalds](http://spectrum.ieee.org/computing/software/linux-at-25-qa-w...)

Stephen Cass: You’re a much more experienced programmer now versus 25 years ago. What’s one thing you know now that you wish your younger self knew?

Linus Torvalds: Actually, I credit the fact that I didn’t know what the hell I was setting myself up for for a lot of the success of Linux. If I had known what I know today when I started, I would never have had the chutzpah to start writing my own operating system: You need a certain amount of naïveté to think that you can do it. I really think that was needed for the project to get started and to succeed. The lack of understanding about the eventual scope of the project helped, but so did getting into it without a lot of preconceived notions of where it should go.

I work with quite a few "old people" who will happily explain everything to you in the most definitive manner possible.

I would've thought it's more that HN'ers tend to have first or second hand experience tech boom/busts, and each subsequent sky-high validation brings back memories and feelings that are hard to ignore