Then let them choke on it . The purpose of the form is to deter people from selling stolen goods to scrap dealers.
It seems strange you have to sign a form to even GIVE scrap metal away. You have to show ID and sign for $50 or more in Missouri. Tweakers stealing metal are a big problem in Missouri.
It’s to keep your ticked off neighbor from taking your other neighbors prized hotrod to the scrapyard and having it crushed…