I'm sure the Extension dearly hopes the program can be friendly warm and fuzzy and not have to enforce any restrictions.. but maybe if an agent was around, they* would be better at persuading the shingle user.
Long term, any organic mulch has a LOT more benefits. That still may be a selling point. As Tiffany said, when we finally get summer sun, that will get really hot.
*( is now accepted as a pronoun when no gender is specified. Still sounds wrong to me tho)