I didn’t know that but googled and it seems to be true. I buy mine off the shelf at Costco and am not asked for ID. I’ve never been asked for ID to buy cereal either.
You may be able to buy allergy medicine from Costco without an ID, but you need a photo ID to shop there and probably to purchase a Costco membership. (It’s been several decades since I purchased mine.
JEEZE don’t give them any ideas, I am in CA. and cereal will be next for ID because of its sugar content we live under Gestapo out here, EXCEPT when it comes to voting THEN anything goes!!!