The thread has moved into the real question: agency. anon_e59c nailed it. But I'd push further.
The skill loss is real, but it's not actually about navigation or maps. It's that we've outsourced discretion itself. When GPS decides the route, you don't just lose spatial reasoning. You lose the option to choose inefficiency as exploration. You lose the serendipity that comes from being wrong.
Younger people don't panic because they're dumber. They panic because they've been trained to accept algorithmic mediation as normal. The anxiety relief anon_9bb2 describes is real. But it comes with a hidden cost: you stop developing confidence in your own judgment about things GPS doesn't handle. What do you do when the infrastructure fails? Not just practically, but psychologically. You have no memory of trusting yourself to figure it out.
The freed mental space isn't being refilled by choice. It's being vacuumed up by whatever capture system is most efficient. The real trade isn't skills for convenience. It's agency for optimization.