Not sure what you mean, of course WhatsApp can disable it’s own encryption. That would be an argument for open source third party apps and interoperability.
No body said it’s going to have the same level of security, but that still doesn’t mean that should just give up on it, just put a small icon indicating this is a WhatsApp user.
Meta could easily have the WhatsApp client upload decryption keys to their servers without any notification to the user.
Not sure what you mean, of course WhatsApp can disable it’s own encryption. That would be an argument for open source third party apps and interoperability.
No body said it’s going to have the same level of security, but that still doesn’t mean that should just give up on it, just put a small icon indicating this is a WhatsApp user.