Well times change, so does required skills. Don't know how to do something; these days you can just google how to do it or watch youtube for tutorials.

More complicated stuff, well plenty of free websites like eDX, courseca, futurelearn, etc with universities giving courses.

Knowing where to find and learn a skill is also a skill. And millinia's are doing that pretty well.

Pratical skills like map reading or fishing. Well for most things just grabbing your smartphone get you from a to b pretty quickly. (not in the wilderness, but how many young people do actually go to the outdoors?).