"But at the moment, porn providers, AV suppliers, policymakers and charities (and plenty of pearl-clutchers) remain divided over the benefits and risks of age verification."
For porn, the risk is totally clear: imagine the price any criminal would pay for a porn viewer DB extract ? And with real ID of course !
And since porn sites were probably not designed with high security in mind, we *know* this will happen.
Nice tool for blackmailers.