For example, a malicious inspector could open the site and pass any verifications in place while a minor is in the room, notice that the site did not prevent the minor from seeing the content, and fine the site.
Conversely, the site could claim they have found some fancy data analysis method to prevent access to minors in the wild while simply implementing some "we believe you are minor" page to be randomly generated once in a while, and claim in court that they have done their best and at most a small handful of children are getting around their complex protections.
In law making the is a concept of standards VS. Rules - look it up.
"you can not serve explicit erotica material to people under the age of 18" is very much a rule. It is super easy to asses whether you do it.
The law should not mandate how to comply.
Law makers do not care if you refrain from pressing the speeder or drive an under powered car.
The question is what role porn has.
Regardless, my comment was more aimed at how we regulate than the effects of porn.
I explicitly mention that I do not assume this is related to porn.
I merely say that we did not turn out fine.
Of course it's a lot easier for those in power to divert attention to a moral panic like porn instead of acknowledging that our economic system and core values are making people depressed and hopeless to the point that they're becoming incapable of performing the one thing they've been optimizing for over millions of years of evolution - reproducing.
Something indicates that the feeling of equality (which most easily can be achieved with actual equality) would be more beneficial.
But then again, this would likely require taxing - something in particular Americans loathe for some reason (hint: decades of aggressive propaganda)
Basically a cleaner society.
Let the industry be innovative and find solutions themselves to stay compliant.
It is not regulators responsibility to solve problems.