Apple has fallen far from their peak with their software offerings on all fronts. Its almost always better to use Google Maps instead of apple's, spotify instead of music, whatsapp instead of imessage, etc.
Dedicated developer's solve problems faster and add more features constantly instead of the ones tied up on unification across Apple. That process needs to change.
Another problem could be because of the new file system they are using. That'll be worked out eventually, but they really need to separate and work on their own pace instead of doing yearly releases that coincides with hardware.