Apple’s effort into improving the Maps app can be seen in iOS 15, an update that added new 3D city details in select areas like London, New York, Los Angeles, and the San Francisco Bay Area. There are also navigation updates that add more detail at complex interchanges. Frost said that Apple wanted to make maps “both safer and visually satisfying to navigate.”
As for the 3D landmarks added in the update, each landmark is created by hand. “We pick the amount of detail we find appropriate and create a 3D mesh of the building landmark itself. And we apply it to the base map,” Frost told CNN… More here.
The following comment at the above link sums up Apple Maps for me-
A roundabout was built down the road from me back in March of this year. Google Maps and Waze had their maps updated within 2 weeks. I submitted the change to Apple numerous times and as of today they still haven’t updated the intersection. I want to like Apple Maps but they make it really hard.
I have tried it a few times and the sad reality is that Google Maps is updated more often, it’s near flawless for navigation and feels like a complete setup. Apple Maps still feels like it is in development.