I think it'd kill fb. There's always gnna be a place for the non Crypto users. I mean. In any foreseeable future takes decades for the populace to learn things these days. It's not the same as driving a car lol. I still have issues I'm semi knowledgeable. I can't login on my pc lol 😂 anyways my point is unless fb per say would try to make it so users barely know their using blockchain I don't see it. But. I suppose that's possible.