Since when did zuck care about how users feel. They intentionally cause anxiety and depression in teens because it made engagement go up. They want the glasses in the world for ambient data collection.
He had a product with the most product market fit ever. He thinks everything he does will have the same user tolerance for his brutalist disrespect for humanity. Thats why everything else he tries to build fails so he has to buy the competition.
His product fit relied on doing the dirty work behind the shadows to make his company worth trillions of dollars, but he's so obsessed with being a front-facing personality when he simply specced low in charisma. He is fundamentally not going to be the person who will convince anyone to put anything on their face.