Yes, perhaps that's true but it doesn't mean that Apple is completely in the clear on this issue. A much more detailed account of iCloud security can be found on this thread: https://news.ycombinator.com/item?id=16449326
I should also add that locked notes in iOS are end-to-end encrypted. Those are pretty easy to use for folks who are not "technically sophisticated"; you just unlock them with your face/fingerprint.
When you add that to secure keychain storage, iMessage (broadest end-to-end encrypted messaging system permitted in China), secure Siri data (imagine what a government could monitor if they owned the Alexa cloud)... Apple offers a significantly more secure service that is still easy to use by the general public.