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Your SSN is often used as a federal registration number even though the card has “do not use for identification” on it in great big letters. Most functions just trust state ID for authentication purposes and use SSN as a label. An identifier in the database sense rather than the authentication sense. At least in theory.
See also how so many of the laws governing this are frankly archaic at this stage, with congress to busy fighting over whether the government should exist or not to actually govern anything effectively. (Note: government inefficiency has never been treated as a reason to govern better, only to govern less and assign more functions to for-profit private entities.
He’s done some promo work for Magic The Gathering in the past, including trolling the bejeezus out of Sean “Day9” Plott with a blue/black no-fun-allowed control deck on Felicia Day’s channel. And in the course of trying to confirm that that existed I found an article he wrote in 2014 titled “why Gamergaters piss me the fuck off”