> You can show ID at a real world store and buy an age verification token. The token is good for exactly one user account on one website for one year

I don’t know if you’ve ever bought alcohol or tobacco, either in person or online, but the process in either case, in my experience, does not involve showing government ID at a private business separate from the one you are going to purchase the product from in advance to purchase a single-account, single-year token which you then use to prove age when you purchase the good in question.