You can actually ask Siri to navigate with Google Maps by appending "using Google Maps" to a request. So for example, "navigate home using Google Maps".
However, clicking an address in a message and being told to install Apple Maps is super aggravating and I'm not sure if there's a way around that...
However, clicking an address in a message and being told to install Apple Maps is super aggravating and I'm not sure if there's a way around that...