[AlexandrB]

On iOS it continues to be very broken, although the difference in scrolling "inertia" was resolved by Apple.

AMP introduces a very non-Appley top bar within the browser, adds new swipe semantics that can be confusing, breaks "tap status bar to scroll to top" behaviour, breaks reader mode (although this is inconsistent), and generally looks out of place. The best way to describe it is like a GTK or KDE app running in macOS. It's clearly not a "native" experience and doesn't really look or act like any other webpage in mobile Safari.