I predict it won't even matter. This law is unenforceable in practice. There is nothing that a bored and highly-motivated teenager who has hours after school to fuck around, won't be able to circumvent. I think back to my teenage years: None of the half-assed attempts made to keep teenagers away from booze, cigarettes, drugs, or porn even remotely worked. These things were readily available to anyone who wanted them. If there is an "I am an adult" digital token, teenagers will easily figure out how to mint them. If the restrictions can be bypassed with VPNs, that's what they will do.