In the USA before Dobbs, abortion couldn't be outlawed outright, so opponents pioneered ways to make it "impossible but not illegal." Mostly by dreaming up impossible regulations for abortion providers.
This post is not about abortion.
Anti-porn forces are following the same playbook with age verification. AV isn't intended to "protect the children" or whatever. It's impossible to comply; customers won't ID themselves. It's a porn biz killer, and that's its purpose.