Some people would be happy to pay for a leaked copy of those photos, for use with any other company that would accept only the "face/license" photo as sufficient proof.
I'd be surprised if ever a Blizzard account was compromised by someone sending in a false picture.
I think you are a little confused here. There's no way for Blizzard to authenticate those pictures, you can take literally anyones passport and just swap the name on it.
> Took a heck of a lot more work than asking someone for username/pass in a live chat
This might be true in a world without photoshop, but that's not the world we live in.
>I'd be surprised if ever a Blizzard account was compromised by someone sending in a false picture.
In my personal experience, they'll very rarely insist upon receiving those photos. My battle.net account isn't even under a real name and despite that I've had the authenticator added and removed several times.
There's services on the darknet where you can buy these fake Id picture/scans as well.