Something that is usually not touched upon in these discussion:
The concept of self-reliance.
I know many mountaineers, that make it a point of pride that they have navigation skills that will work when they need them.
It often seems like people want to tackle things which requires skill, but they don't want to pay the price of time to learn. I've never understood that.
Down in LA, I teach sailing sometimes, and one of my instructor certifications is in navigation. It drives me batty when people want to be totally tech driven. There is such a thing as seamanship, which includes nav skills. Yeah, we have GPS, and we use them. But I'd rarely use one to navigate, except when out of sight of land, for convenience.
We had a guy out on a cruise to Catalina, returning, when his boat sprung a leak. Panic ensued. He gets on the radio and describes where he is several times. Each time is different, as far apart as 10 miles.
So he gets the long/lat from the GPS, which puts him somewhere in Arizona........fortunately, the Coast Guard can triangulate your position from your radio broadcast.
