Whatsapp is from whatsapp inc, founded by two former yahoo emplyees, then facebook bought for 19 billions dollar. Very different from "being from facebook".
You can probably trust whatsapp end to end encryption as much as you can trust facebook to protect your privacy [1][2].
I'm aware Facebook bought WhatsApp. I don't think that changes matters much though. WhatsApp is one of the "private channels" that Facebook Inc owns, and in Zuckerberg's manifesto [1] you can read:
"We are strong advocates of encryption and have built it into the largest messaging platforms in the world -- WhatsApp and Messenger."
My point is that "end-to-end encryption in private channels" and "using AI to analyze data in private channels" is incompatible.
Who's to say that they aren't purposefully using encryption that they've made breakable so they can read the messages while making it difficult for anyone else to do so (other than the intended recipient?)
Historically speaking, Zuckerberg isn't trustworthy. The "Stupid fucks" comment from long ago should've been the first indicator of his shady character.
"We are strong advocates of encryption and have built it into the largest messaging platforms in the world -- WhatsApp and Messenger."
My point is that "end-to-end encryption in private channels" and "using AI to analyze data in private channels" is incompatible.
[1] https://www.facebook.com/notes/mark-zuckerberg/building-glob...