I'm not sure your age cut off is quite right, I'm 50 in a few months and my wife and our friends are all quite "pro climate" (just to easily sum it up), most people I know from the younger end of GenX are... the problem lies just a few years beyond that with the older GenX and up into the Boomers, which is where all the money is.
Yea it’s not an age thing as much as it’s a “I got mine and I’m gonna pull up the ladder and defend it” mentality. Yes, a stereotypical Boomer take, but not necessarily limited to or locked to the entire generation.