Thanks for posting, I didn’t see that. I could have been composing my post while you wrote that. I am at my desk and double checked my DD-214 in the desk drawer because I was pretty sure my SSN was on it and so I thought that initial statement was not correct. In any case, the vast majority of veterans usually have their DD-214 on them or have easy access to it and can provide it and so dispel any notion as to their veteran status and where they served.
I do not carry my DD-214 with me. It is to valuable. Here, you can get your drivers licence annotated with your veteran status and that works for most needs. The DD-214 spends most of its time in a safe. I highly encourage any vets to check if their state supports a state issued ID that supports the annotation.