Reuters reporting on Meta's AI chatbot and the dataset the company used to train it:

Meta also did not use private chats on its messaging services as training data for the model and took steps to filter private details from public datasets used for training, said Meta President of Global Affairs Nick Clegg, speaking on the sidelines of the company's annual Connect conference this week.

Emphasis mine.

This is a neat little trick. A reasonable reader, or someone not completely cynical, may think the term “private chat” just means chats, which are private in nature.

But Facebook / Meta doesn't believe chats are inherently private. Privacy is an opt-in feature on Messenger. You must explicitly switch on the end-to-end encryption. Only then will Meta agree to keep out of your user data.

just one more technology and the world will be a better place, bro, for you and for me, bro.