Remarkably, Youtube's logged out experience will still be completely available to all age groups. And an a Australian HN user mentioned that one 14-year old had another (presumably older looking) 14-year old do the "video selfie" for her to verify her account on one the sites. So I'm not sure the fight will go away, but it may be slightly more tractable.

It will normalize people thinking that uploading their state-issued ID to whatever contractor is validating accounts is safe and normal.