Funny you say that, walked out to find the exact same thing last night. explained to them the rational behind the rule and i think the light bulb came on.
Also had a guy wear a pinny (sic?) which would of been ok except it was yellow with diamomds on it 🙄 my guess is the AD just grabed it from the chain gang stuff right before kickoff err tipoff.
Also had a partner relay a story where a guy just stuck a mshsaa state patch on the sleeve of his shirt :rolleyes::rolleyes