Exactly. None of Facebook's products are irreplaceable. If Facebook, WhatsApp, Instagram, Oculus disappeared, even disappeared overnight, there would be a brief period of confusion where everyone scrambled to find alternatives, they would find these alternatives, and then... life would just go on. We might all be better off, particularly if everyone switched over to more open-web, accessible technologies. If the early studies are right, we might even see a general improvement in public happiness and mental health without Facebook and Instagram.