There is no need to explicitly tell them your age. That's the problem. They know based on usage patterns. They know what age groups watch which videos. They u

There is no need to explicitly tell them your age. That's the problem. They know based on usage patterns. They know what age groups watch which videos. They use it to target children. But because they didn't explicitly collect it, they can skirt the law. The intent of the law is being ignored for profit.