It cannot work *perfectly*, but unlike most crypto stuff, it doesn't have to (at least, that part doesn't need to). It's a social/political problem, not a technical one.
The goal doesn't even need to be to make a completely perfect, impossible to circumvent, barrier for all minors; all this needs to do is just make it equally difficult for a minor to get adult (for whatever definition thereof) content online as it is to get tobacco or alcohol or gambling in real life, the hard part being to do so without compromising privacy, privacy being the bit which has to be done perfectly.
> See, that's why this can't be solved technically.
Which "this"? There's multiple things here. I'm suggesting one specific "this" (anonymous age verification) in response to another "this" (the internet is not suitable for all ages).
> Pornhub has a decent amount of sexual health material on it so there's an argument to be made for allowing teens access to at least parts of it.
There's more content on the internet than any human can consume in a lifetime, so the presence of age-appropriate stuff as a subset of some website is no more relevant than how the intro to a porn film ("there's something wrong with my fridge, it's sooooo hot", though I am thinking of a beer commercial parodying this) is not itself 18 or R18 or whatever your local certification is called.
> So we agree that this is going to end poorly?
On the contrary, literally all the rest of my comment after that quote is cut explain why we *do not agree* about this.
