I'm under no illusions, btw. I know they'll access it. I know I did as a teen (albeit magazines rather than the web) but I think a dialogue is sorely missing about damage, the impact on women, body image, etc etc. The more this is pushed into a black/white old enough / not old enough over-simplified scenario, the less we can have nuanced conversations about it all.
I suspect this whole move is purely an optics piece. That doesn't make it any less dangerous, in fact it maybe makes it more dangerous, but it explains the incompetence and lack of thought behind it.