As one option, they weren't old enough, so they did not have to. As another, they moved and GPS app was too convenient, never learned to drive without it.

I mean, at least here in US, smartphones with (easy and free) turn-by-turn navigation apps have been widespread since early 2010s. So anyone born around 2000 had access to the tech in their teens. And even earlier than 2000s if they only needed it as adults. And before that, in-car GPS units were available in 2000s. So not that new either.

it’s the same situation with writing cursive. use it or lose it. and for the effort in using it for little to no gain, or even a detriment, why would you put forth the effort to learn such skills? especially since now a days you have to pick up ten times the skills of people in the past