If you need access to both apps from China and websites/apps from outside China, non-Apple devices have been difficult before this, primarily due to push notification infrastructure.
This makes it more difficult. But I don’t think it matters given how difficult it was prior to this.
Using apps based on Google Play Services may be impossible on those phones out of the box (not sure), but websites have no such dependency and most people don’t give a crap about push notifications from PWAs anyway so whether FCM works with the device matters little. Also doesn’t the web push API support different push services at registration time so those devices’ browsers can register their own vendor push server? (It’s been a while since I implemented web push myself, memory is fuzzy.)
This is blocking access to websites wholesale, so it’s on a whole different level.
This makes it more difficult. But I don’t think it matters given how difficult it was prior to this.