Keep in mind that there's an age everyone experiences, not just white men, where people feel isolated and unheard. Believing that it only applies to young white men is a slippery slope into the mindset that creates these whackjobs.

OK, but young white men are Peterson's target demographic and he doesn't really appeal to anyone else (broadly). You're correct that everyone experiences that feeling but it's not really relevant to this conversation.

The person you replied to did not imply in any way that only young white men experience that feeling of isolation. Rather, the point was that they are the group most affected by Peterson's rhetoric.