no, to clarify, apple has been using the weather channel (exclusively, i believe) for weather info across its ecosystem. you can't get integrated weather info on apple devices (iphone, watch, etc.) without it (you can download other apps but they wouldn't integrate with the OS).

i'd be super happy if they switched to the national weather service, but absent that, dark sky is more privacy preserving than the weather channel (who reportedly sell location data, for example).