Hah, I buy this argument far more than any claims that people need accurate time measurement at notice short enough that taking a phone from a pocket/bag is unacceptable. Though I do think watches are hopelessly retro :-)

I mean, don't get me wrong. It is an added convenience to have access to the time a bit more quickly. If I'm checking the time, there's a decent chance I'm in a rush for something.

But yeah, almost purely fashion.