That is well worth a read!
And a question for anyone using an Apple device, have you switched on/were you aware of Advanced Data Protection?
It is off by default!! (Find it by: Settings > Your name/Apple ID > iCloud > Advanced Data Protection)
They try to scaremonger you into not activating it - in reality you’ll only need the key in pretty extreme circumstances:
What are the odds of you losing access to all of your devices, all of your backups, your passcode, and your phone number all at once? (Pretty minimal I’d say!)