I already explained: "exclusively about apps that store their data in the cloud".
So Photoshop, Blender, etc. -- these are not apps that store their data in the cloud. They're using filesystems. There's no sync. They're not local-first, they're just local.
But the Apple apps -- Notes, Music, Calendar -- they are very much local-first. Their source of truth is in iCloud when you activate that, but they fully work offline as well and then sync once there's a connection. This is completely different from e.g. Photoshop.
So Photoshop, Blender, etc. -- these are not apps that store their data in the cloud. They're using filesystems. There's no sync. They're not local-first, they're just local.
But the Apple apps -- Notes, Music, Calendar -- they are very much local-first. Their source of truth is in iCloud when you activate that, but they fully work offline as well and then sync once there's a connection. This is completely different from e.g. Photoshop.