As I reluctant Millennial, I can confirm some of the generational differences. We like to share information freely, gather information freely, and don't like to pay for club memberships. GMCMI feels like a paywall--it's off-putting.
I'm not opposed to clubs at all, and I wouldn't say we're not socially engaged (we're not Gen Z'ers after all
I look forward to attending a rally of some sort soon and would absolutely love to rub elbows with more GMC enthusiasts, but there's only so much I'm willing to pay for a "camping" weekend. I tend towards boondocking, compromise with the wife and pay "too much" for USFS campgrounds (where we already get 50% off) and would really struggle paying more than that for the right to park somewhere for a couple nights. When we select high-dollar facilities and the admission gets up into the hundreds of dollars on top of the already high fuel costs, my interest dwindles.
I see the allure of the information sessions over the decades, but many of us now would rather see a well-made YouTube video so we can access the info when/where it's pertinent to us. I can envision those information sessions becoming a thing of the past eventually.
There's no substitute for the organized work parties though. Those seem pretty neat to me.