Yes I thought the same thing when I read his article. My teenagers are 14 - 15. I am on Instagram. The biggest difference I see is they made the transition to SnapChat discussed in this article 12 months ago. It sounds like the author sees that happening now but with the younger ones they seem to have made the move over nearly a year ago. It's funny as I follow a few of them on Instagram and it just dried up to now only doing 1 or 2 pictures per week and they're closer to the "staged" sanitized FB ones he discusses.