And you have the privilege of speaking of "the course of user experience" as if it's an undeniable course (or a user-driven movement, for that matter; which I daresay is not easily substantiated when we're on a topic of a decision of Apple engineering rolled out without warning) ... as a result of your dispassionate research?
We're talking about different things. Yes, I can say without hesitation that people want ("the course of user experience") document sync. Refutations welcome.
You might be trying to argue that people also want privacy or security in their document sync, but that has nothing to do with the matter at hand. iCloud is at least as secure as any other consumer sync service.