That's a skill that depends on motor functions of your hands, so it makes sense that it degrades with lack of practice.
> I can't no longer find my way driving without a GPS. Reading a map? lol
Pretty sure what that actually means in most cases is "I can go from A to B without GPS, but the route will be suboptimal, and I will have to keep more attention to street names"
If you ever had a joy of printing map quest or using a paper map, I'm sure you still these people skill can do, maybe it will take them longer. I'm good at reading mall maps tho.