A few weeks ago I got this offer. I have citi amex but no other amex products. Husband had citi amex, as well as Costco and Hilton Amex. He didn't get this offer. Our 13 yo daughter just got this offer last week. She's got an AA account but, of course, no credit cards.

Haven't seen this happen (kids getting offered cc) in many years. When the kids were toddlers they were offered cards, even solicited over the phone.
Now I'll go and see what the code # is on offer since if both are the same we might try for a relative who "lives" in our household apply for card.