I'm not sure what you are seeing, but what I'm seeing is widespread teach illiteracy in Gen Z outside of their smartphone. Gen Z and younger mostly grew up with smartphones as their primary devices and with little contact with a laptop or desktop computer (and even then confined 99% to browser usage).
I can't quite confirm that. My younger siblings' classmates (still high school students, born >=2010, non tech average people) don't give a shit on these topics and behave identical to the Gen X and Y described.
But maybe that was kind of related to times and the place – where I live people needed to be a bit more savvy, so thought like "why you buy an iPhone if Xiaomi can do the same 4x cheaper; if you chose the right model you may even have a good camera too" was popular even in non-tech circles.
But yeah, now that hardware is a bit more of a commodity and such tradeoff might give you a bit more adware with a bit less convenience, maybe it's different. But the next generation's understanding of computer/phone as something else than a magical black box is gone.
Yeah, you’ll need a lot of supporting evidence for this claim. From my personal and professional experience, this doesn’t track. And given how online the younger generations are, it tracks even less. I think there might be a bias towards tech bubbles in that statement.