"The claim that WhatsApp can access people's encrypted communications is patently false," Meta spokesperson Andy Stone said. He added that the bureau had already "disavowed this purported investigation, calling its own employee's allegations unsubstantiated."
I can't help but notice that in response to people's concern that Meta may be able to read people's messages, the Meta spokesperson responds that WhatsApp can't read them. A little bit of administrative juggling on Meta's end so that the team with access to the messages doesn't fall within the WhatsAll group, and both claims could be true.
To be fair, the article is 9 years old and things could have changed in the meantime.