URLs have always been an implementation detail and not a user feature. From the very beginning it was intended that users would follow links, not type in URLs. HTML was built on hiding URLs behind text. Then AOL keywords happened. Then search explosion happened. And short URLs. And QR codes for real-world linking. And bookmarks because yet again typing in URLs is not a major driving use case.
Typing in un-obfuscated URLs has almost never been a key feature or use-case of the web. If anything URL obfuscation is a core building block of the web and is a huge reason _why_ the web skyrocketed in popularity & usage. Don't pretend that somehow AMP obfuscating URLs will be the death of the web. The web exploded in growth despite massive, wide-spread URL obfuscation over the last 20 years. Nothing is actually changing here.