You're thinking of Apple. WhatsApp backups are not stored by Meta. Apple is the company that breaks their "end-to-end" encryption by backing up the encryption keys to their own servers.

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topranks an hour ago | parent [-]

You can opt-in to encrypting those backups so Apple have no access.

	▲	modeless an hour ago \| parent [-]
		Yes. I believe a small percentage of Apple users do this. Unfortunately that doesn't prevent Apple from reading your messages from the backups of the vast majority of people you correspond with.