[gruez]

>You can enable ADP for E2E encrypted backups, but it's probable not going to help you much, because the people you are communicating with likely didn't.

That just sounds like a fundamental issue with security in general, not specific to Apple/Microsoft.

[microtonal]

My point is that these defaults that look secure to a non-expert, but do not hold up to scrutiny, are probably intentional.

I have found that even many tech people have incorrect beliefs about these things, like assuming that iCloud Backups are E2E encrypted by default or that disabling Allow Apps to Request to Track disables trackers inside apps.