The contents of the chat messages are e2e encrypted, so meta can’t see what you are sending.

But they can see all of the Meta data, ie how often you chat with someone, how often you send pictures/videos/voice messages, etc.

That is more than enough to know everything about you and your friends.

Nuclear is too expensive. It doesn’t make sense to build new reactors.

He probably realized that millions of people blocked him and it hurt his ego.