No offence to those of advanced years, but aero and flying clubs seem to be mostly dominated by older generations. Younger people really don’t want to spend their spare time amongst a much older crowd.
But we did associate with the older (WW2 pilots) when we joined flying clubs and learned a great deal and just not about flying.
It’s got nothing to do with “lazy” millennials, if anything I think millennials work longer and harder, it’s just their attraction to recreational aviation is declining. It may be at a point where it can’t be turned around and soon there’ll be no great interest in private flying anymore.
I don't think that millennials work harder and longer at work. It is all the fluff with "social media" that they work longer and harder at.