It’s pretty in character with zuckerburg so that’s probably why, and the public moves of the two companies align with that part of the article. I’ll agree with you that the quote wasn’t sourced as well as it should be, but it’s hard to fault people when they are told a duck quacked and take it at face value. When someone does something in line with their reputation, people accept a lower burden of proof. If he comes out and denies it, then that’s another thing or if it was a material statement for a binding decision then it would also need more proof.