IMHO, getting people to install a sketchy PWA is going to be more successful with newer versions of Android that allow a PWA to throw an “install” button in the browser.
When I look at my mobile end users, the people who install PWAs are overwhelmingly on newer versions of Android, not older versions, or iOS. Opening the share menu and adding a bookmark to the Home Screen seems simple, but it provides an amount of friction that scares off a lot of end users.