This is what I tell people when we get to this topic. I like to ask 'where do you communicate with other people'

And most people agree to spend a lot more time in Telegram or even just Whatsapp. If you ask gamers also add Discord, and Slack for a lot of professionals.

Most people I talk to barely use Facebook but accepted it as defacto standard, which probably explains why they can't think about 'replacing' it when in reality it already happened.