Why ? You think Meta removed the privacy layers or put backdoors in place ? I mean if that's the suspicion, maybe we should read the terms of service and see if they actually guarantee E2E encryption
The way Zuckerberg tricked Acton and Koum is by itself enough for me not to trust Whatsapp. Even from a hypothetical "their encryption works but that's really scummy" perspective
It was bought as a power play, consolidation of tech power. Why would I trust them to do the right thing?