There are many ways that #WhatsApp could implement methods for getting users' messages while still using #EndToEndEncryption. The #mobile app could take a command to send messages to #Meta before they are encrypted (via an #E2EE channel still). This is why #FreeSoftware and #OpenSource are essential for #privacy. Anyone can then inspect what the app is actually doing. #Proprietary #software means blinding trusting the developer's claims.
https://www.pcmag.com/news/lawsuit-alleges-that-whatsapp-has-no-end-to-end-encryption