Reduced complexity is often a rallying cry, but I think the root of the phenomenon is in trying to find one's own social and professional standing in the situation where all the prominent positions are already taken and what little is left requires years of hard labor (complexity, certification, corporate review system, etc).
If this situation upsets you consider the alternatives, they might be worse.
Currently popular music mostly sounds like noise to me, but that's not the point. What are the current generation of musicians supposed to do, be silent and spend their lives listening to the great bands of my youth? It's impossible to match Pink Floyd in the style of Pink Floyd. They need a new style.
Facebook is losing traffic to whatever is the latest trend in social media, not really because people are suddenly paranoid about privacy, but because each generation needs a network where the previous generation is not.
And for as long as humans write programs, there will be a need to invent new languages, not because the old languages were technically inadequate, but because each generation of programmers needs a way to escape the shadow of the previous generation, the way acorns need squirrels to carry them away from the shadow of oak trees.
It's interest to see which parts of our civilization came which side of the divide. Market economy, for example is a great way for a young enterprising person to find their own footing away from the old (hence startups). Academia OTOH went totally the other way (hence grad school).
OTOH, the young always have a fresh perspective and they usually have good ideas based on the times. They should be listened to and mentored. Very few active older (1995+) folks left in IT ,after the method management and purposeful purging methods of the last 10 years, to mentor them. Most of us weren't great at teaching anyway. It was a paycheck.
Tech is ripe for applied group psychology and anthropology. The social, psychological, and anthropological factors are obvious to casual observers -- but completely invisible to the people they affect the most.
There's a reason for it, and perhaps overall it's a good thing....but that still doesn't mean that it can't be accepted and acknowledged as a facet of the community.
I try to explain why we do things the way we do and if they still want to try to change things, I make sure it's easy to go back again in case it fails the usual way.
I'm lucky enough to have been around the industry for a while. I could probably count a dozen or more things that started out "Like X, only without all the BS!" --- only to end up with just as much BS or more than X ever had.