They have a nicely implemented E2E protocol. This is operationally convenient: Meta can accurately say that they don't store WhatsApp messages, so fewer access requests go to them. And I'm sure it's nice for engineer morale, too.
However, the app makes it semi-mandatory to turn on backups. If you say no, it keeps nagging you. If you always say no, you are in the 0.1% and everyone you talk to has backups enabled, so all of your conversations are helpfully backed up anyway, just not for you :)
These backups go to Google Drive or iCloud. You can draw your own conclusions about who has access and who handles the LE/IC requests.
They have a nicely implemented E2E protocol. This is operationally convenient: Meta can accurately say that they don't store WhatsApp messages, so fewer access requests go to them. And I'm sure it's nice for engineer morale, too.
However, the app makes it semi-mandatory to turn on backups. If you say no, it keeps nagging you. If you always say no, you are in the 0.1% and everyone you talk to has backups enabled, so all of your conversations are helpfully backed up anyway, just not for you :)
These backups go to Google Drive or iCloud. You can draw your own conclusions about who has access and who handles the LE/IC requests.