This is not even close to true. Most of the world is still wilderness, and always will be. I'd love to drop you in the middle of Siberia, northern Canada, or the Amazon and watch you try to find a road or hut :)

Hell, I could drop you in a huge wilderness region in my state (Arizona) where you might walk a dozen miles before you encounter a "trail" (loosly defined).

Honestly, I don't know how you could end up with a take like that unless you're a European who hasn't travelled much.