PWAs have nothing to do with web views or native apps. They're just a collection of technologies (service worker, caching API, platform APIs, home screen instal

PWAs have nothing to do with web views or native apps. They're just a collection of technologies (service worker, caching API, platform APIs, home screen installation, etc) that makes it possible to have offline available web apps that have a shortcut on your desktop/home screen. There is no web view or native app (outside of your default) browser involved.