This is one of the strangest internet myths. Every single state in America will issue a photo ID which is fully equivalent to a drivers license for every purpose other than permitting you to drive.

Also, you don't need "Real ID" to fly no matter what they say. You don't even need a photo ID at all (although they'll force you to waste time if you don't have one. I found this out when I lost mine but still had to travel.)

Here in New Zealand you don’t need any ID to fly (nationally), so even the claim that ID is required is shaky.