Instead, Gen Z favors Snapchat, Whisper and Secret — ephemeral and visually engaging platforms that cater to the youngsters' eight-second attention span.
Well, they sort of have that covered by owning Instagram.
I think all those are valid points. I think another point is that the amount of "adults" on FB is stifling to kids. They can't speak freely when aunt Martha and Grandpa are watching their account.