[cdjk]

This could actually be a feature and not a bug from a legal perspective. If they are blocking anyone who gives any indication that they are under 13 then it might be easier to show compliance with COPPA.

This has made me wonder at times if the best way to get my data delete from someplace is to talk to customer service and repeatedly say that I'm twelve.

[hansvm]

That's definitely how it explicitly worked at one workplace; to the extent that account restrictions could form a poset, if we had evidence that some restriction might be required (e.g., from multiple forms of age evidence, do any of them indicate this might be a minor or some other protected class), that restriction would be applied.