Yes... I understand. My questions was why this seems so desirable to have when it requires carrying more equipment, and seems like an unlikely scenario most of the time.

Different strokes for different folks. I personally already have to bring micro USB, usb c, lightning, and a couple of proprietary chargers wherever I go, plus Magsafe 2 when I bring my personal laptop... so it's not like I'm going from an all USB-C world just because of magsafe. And I have tripped over my cables many times and been saved by magsafe. My work laptop has come crashing to the ground a couple of times so far because a family member's dog pushed on the cable... I don't want to have to deal with that risk profile for my personal laptop!