Before that, AMP

They're doing something. Safari has automatically converted AMP links back to their original pages since iOS 11. It could stand to be a system-wide behavior for my own usage, but it'd be a little intrusive if you actually did want to share an AMP link for a specific reason if it automatically altered your clipboard or text messages.

Chrome does it too, and the AMP project is supportive: https://9to5mac.com/2017/08/24/ios-11-safari-amp-links/

The idea is, when a foo has <link rel=canonical href=bar>, if you go to share foo your browser will actually share the canonical url, bar.

AMP doesn't need help dying; I wouldn't be surprised if Google killed it soon because it never took off.