A license plate is different in that is involving someone not involved in the act. It's a third party who didn't willingly take part in the act so I'm not sure that's the same thing.

I'm pretty sure there is something about selling an image without permission as it's for gains.

We all make mistakes. I do but I'm not mad at people for bringing it up or telling people or even showing pictures of it. If I give you a picture of me is yours. I gave it to you without pretext, that makes it a gift. When people go through divorce and the man wants the ring he bought his woman back it comes down to "Was it a gift or a promise?" If it was a gift is hers and she can do what she wants with it. If it's a promise it legally must be returned at means request. ( this is regardless of gender) When someone gives you something like that is a gift, not a promise unless stated.

I can't buy you a car and then tell you what you can and can't do with it legally.

You can argue that a car doesn't make someone look bad but that doesn't make it but a gift.

It's a dick thing to do I agree but a gift is a gift. Still doesn't merit censorship