Yeah, but if the phone/browser decides to delete some of the PWA's code to save space, you won't be able to use any maps at all until you connect back to the internet.
Before you say "just download the code to your phone as a file", I'm going to assert that's exactly what an app is ;)
Before you say "just download the code to your phone as a file", I'm going to assert that's exactly what an app is ;)