>>Why is the govt in this business at all, just make all the plates the same and people can buy bumper stickers-oh wait, gubmint wants the $.<<
100% true but the same no matter what the message is. It strikes me as a relatively honest way for the gummint to get money (compared to things like taxes). You pay, they let you advertise yourself on your license plate.
You allow one plate, you have to allow them all. Put a plate on the front or a bumper sticker. Govt is deciding what is offensive to the general public, LOL.