Earlier quoted context omitted.
How do you square that claim with E2EE and the way Find My works?
You can finally have your entire iCloud account end-to-end encrypted using Advanced Data Protection since earlier this year. iCloud Backups, iCloud drive, passwords, health data, basically everything except specifically iCloud Mail, Contacts, and Calendar [1] is all inaccessible to Apple when Advanced Data Protection is enabled. 1: https://support.apple.com/en-us/HT202303
> First, iCloud E2EE is opt-in.
> Second, iCloud E2EE is woefully incomplete. When you iMessage with someone, they have iCloud Backup on by default, and non-E2EE by default, which means that approximately all of your iMessages (including all image and document attachments) will still be readable by Apple and the FBI because they are backed up twice: once from each end of the conversation.
> Furthermore, the E2EE for iCloud Photos is not designed to preserve privacy. Even though iCloud Photos now supports E2EE for the content of the photos and videos stored, the file metadata is not E2EE, and the metadata includes the FILENAME and also a unique hash of the unencrypted file content.