If only PWA were not made invisible by Apple. The install button has been moved voluntarily to the share menu.
The UE should make it mandatory to permit PWA install popups on all platforms.
Such problems wouldn't arise, because this app could be installable as a cached Web app. A native mobile application could be installed only for specific functionalities.
PWAs are not much more than webpages, basically just a separate launcher icon and less browser chrome making it look and feel more native. It's in the user's best interest to use these, since they get the good parts of using an app while avoiding full-featured-app junk like persistent background services that constantly monitor you.
The UE should make it mandatory to permit PWA install popups on all platforms.
Such problems wouldn't arise, because this app could be installable as a cached Web app. A native mobile application could be installed only for specific functionalities.