That's a sorry attempt at an excuse. Companies are expected to collect ID and have related business logic that respects local laws but can't figure out how to tag their content? That's an utterly nonsensical position.

There's no reason a simple, standardized header can't be used to communicate any number of classifications simultaneously.

Edit: It occurs to me that if you oppose all age related measures then my above response isn't entirely fair to you. I still think it's an absurd objection but the comparison I made no longer applies.