Oh, I've known quite a few who resisted change... hell, converting ASP.Net apps to use node tools as part of build scripts over the hacky VS plugins was a fight a few years ago... (around node 0.10 release). There are a lot of old timers that resist change, but I've seen relatively young devs (mid 20's) resistant to change as well. I don't think it's really a product of age so much as hitting a point where learning new stuff isn't as appealing.