I think notifications are off on iOS by default, and the first time you launch the app, it asks you "[App] wants to send you notifications" and you have to explicitly allow it. Same thing with accessing your contacts/calendar and stuff.
I guess I decided that Google's BS was a little more palatable than Apple's BS.
As soon as the winds change, just you wait. They'll have some bullshit excuse about engagement or control, but it will be gone just the same.
many apps simply ask you if they can show you notifications.