It’s not fully supported because you have to click the “share button” and scroll down and click on “add to home screen”?

From iOS 1.0 designers figure out how to design a “Add go home screen” banner in html that would point to the right place.

I'm pretty sure GP is referring to all the PWA-friendly features that are missing on iOS, of which there are many.

He said specifically add to home screen. If the “plethora” of PWA features are available for Android, where is the thriving market of web based games on Android?