I don' think so, but, even with advanced data protection on - if you communicate with someone via iMessage, for example, that does not use advanced data protection, and then they use iCloud backup, then it nullifies it essentially. Feds could get your messages via the recipients iCloud backup.

Advanced Data Protection needs to be turned on for both you, and everyone you communicate with if you want the full chain to be E2EE. Your communications are only ever as secure as its recipient.