You're funny if you think a platform designed for a younger audience means that another platform is automatically dying. Young people DO still use Facebook, whether you want to admit it or not. They're using both. Fact is, those other platforms hold a fraction of users.

You're talking about billions of users. Facebook losing 14 million preteens to Tiktok is not signaling the death of the website. FB has nearly 3 billion active users, with 1.7 billion daily active users -- other networks are less than a few hundred million. Would you like me to draw you a picture of the difference that makes?