Yes accessibility is a good point....right there in your hand.
On one side that convenience (like in the example you give) is a godsend. Imagine getting a laptop out of your backpack to book a hotel or check a train time.
On the flip side it's a godsend for all the SM apps to have an end user with an always on, always in reach, portal to their brain.
The saddest thing is all of this is a creation for commercial enterprise. Even if some of it was initially a 'happy accident' from their pov, they've morphed the beast right through the vulnerable parts of brains and minds. The net benefit to society miles below zero.
The unchecked, unregulated horse has bolted

....it will be interesting to get feedback from our Aussie posters on how the under 16 ban is playing out down under??