My 2 cents is that I'm 41 and in the big belly, bike and wallet category. Yet when I ride, I ride with 18-44 year olds. The biggest Hucks (20+ feet are done by the guys older than me). A lot of kids lose out on the enduros because they buy heavy freeride bikes and wonder why they can't pedal up and over terrain at speed. (A couple kids have 44 tooth DH rigs and ride my tail up hills while I'm huffing in Granny - not many but some).
…Point is, we ride 29s, single speeds DHs XCs All Mtns. and we ride with whoever wants to rip at the trailhead. If you can pedal and keep up, than its all good.
Save your skier-snob shit for the lift lines and keep it out of our sport. Last thing we need is more division in this world…