A very good point, my age is showing. Personally, I can't imagine a world that isn't connected (even when I was a young kid, my dad had a pager and my mother had a brick cellphone for work).
It was a glorious time when you couldn't get connectivity in flight or in national parks. The tether has never been tighter.
But, yes, as you see on this thread people are growing up today who find the idea of not being able to be reached or to reach someone (even for a few hours) as unsettling. And, if I'm being honest, I've also thought to myself that if I were going off on any extended solo hiking/backpacking these days I'd start seriously thinking about getting one of those satellite messaging systems.
ADDED: My concern is that there seems to be an increasing expectation that, if "they" don't make cellular coverage available everywhere they're creating an unsafe environment and something needs to be done about that. (And conversely, if I'm not always available, I'm being somehow irresponsible.)