Android at least has the ability to "install" a PWA as an app on your home screen. They just need to allow devs to list them on their app store, and then it really wouldn't be any more inconvenient than a native app.
I didn't say that it was more inconvenient than installing a native app, but it's not more convenient either. I don't see any reason to switch to these PWAs when native apps are usually guaranteed to have better UX, features, Apple Pay, Face ID support etc.