I wish there was a more elegant and effective way to do it. Kids' lives are destroyed by earlier and earlier access to hardcore pornography, a middle schooler today is looking at stuff that would have made the hardest pervert in the 70s blush and it's altering them for life. It's a problem that should be solved by hanging pornographers as enemies of the state, but we're not there yet. (Alternatively, and more realistically, it should be parents actually parenting their kids than the gov doing anything beyond the above)
That's less and less likely though, and even if you lock the big smut sites behind verification walls, there's always a niche basketweaving forum with a porn page that will slip through the cracks. Determined perverts will get their porn, and whichever entity is contracted to do the "verification" gets handed a treasure trove of PII and data to better trap the average person into an un-cool cyberpunk dystopia.
If a government could be trusted to be purely good, and solely exist to "protect children" like they claim, then I wouldn't have as much of a problem with the concept. Protecting kids from early and overexposure to smut should be something that happens, but i don't trust the powers that be to execute it in a way that doesn't also take the opportunity to seize more data, power, and influence over the lives of citizens (or sell the opportunity for a quick profit).
