Answer:
To my knowledge, it is still valid and has not been superseded. If you are reporting to credit bureaus on consumer credit cards, you must report for spouses that are authorized users for the account. You do not have to clarify in the reporting whether the spouse is just an authorized user or is contractually responsible. At your option you could report same for other non-spouse authorized users. Also, at your option, you could choose to not report on consumer credit cards.