The ironic thing is that WhatsApp very heavily pushes users into Google account backups, which are unencrypted, giving government agencies all the access they want.
I remember some talk about those getting encrypted, don't k ow if that has happened yet.
They seems to be end to end encrypted now. It asked me a password to encrypt the backup with. It's a recent feature and you must trust a closed source app. No idea of I can download the backup from Google drive with a web browser and decrypt it with some common decryption program.
I remember some talk about those getting encrypted, don't k ow if that has happened yet.