Another consideration is allowing iOS users to specify website preferences as can be done on MacOS, Windows and Android.
I see that Google already allowed autoplay on installed PWAs for mobile, and now also do allow it for desktop: https://developers.google.com/web/updates/2019/02/chrome-73-media-updates#autoplay-pwa
Will Apple follow? Will they even talk about it? Hello???
Because iPhone and iPad are critical targets for our startup, Apple is effectively denying using a PWA for our minimal viable product. For now we will develop our next prototype as a native app instead of PWA - starting us down the path of abandoning what seemed like a dream come true with PWA.