Not sure I'm following, what's the importance of the term "app"?

(And yes, they're all local first on mobile as well.)

(Also Notes and Photos were mobile apps on the iPhone first [not that it really matters, just FYI].)

Apple continues to release new apps under this model today (i.e., local first), e.g., https://en.wikipedia.org/wiki/Freeform_(Apple). In my mind, the evidence just points to Apple thinking local-first is the best approach for the software on their devices.