the arrangements should only verify age, not identity
should. How? Credit card? Well, this data goes SOMEWHERE. I bet we'll see, within the next 2 years, a "leaked report" that a database of 357 milion credit and debit card details used by the Fcukboard to verify porn age, but not identity, has been exposed (in cleartext, what else) on the fcukboard website dontlookhere.html, and the fcukboard is going to issue the following statement: "Privacy of personal data is our primary concern and as a responsible data handler, we would like to stress, we take privacy with utmost care, etc."
p.s. time to verify age for tor browser users, because, sooner than later, my kids will want to know what it's for (no no no, it's NOT for you to access all the stuff that our democratically elected leaders consider off-limits, including tits and bits, no, definitely NOT just to access all the stuff that our democratically elected leaders consider off-limits, including tits and bits.