I think this is an Apple bug.
I’ve seen it with non-Google apps too. I’m not sure what causes it, but I believe sometimes you can long tap the link and select the correct option.
I believe the behavior where you say no and it still tries to open the app is because the default behavior on Google Maps links is to open Google Maps.
This happens to me now on Android. It either wants to download google maps or if I try to open in browser, it just repeatedly refresh loops before drawing anything. But not always possible it seems to get the address by inspecting the link