Really? What's the purpose of that law?
I think the purpose is not to have extra seeds on the ground that may encourage mice, squirrels and other critters to the feeding area.
My guess is that it started as an argument between two property owners, and one complained, loudly, to their city councilman.
This used to be a great town, 38 years ago. Now, not so much.
It is my understanding that non-hulled seeds have a very low germination rate. It cuts down on the number of weed sprouts growing in the ground at the bottom of a feeder.
I have no experience with the non-hulled variety of seed myself. I do know that I am a very busy ‘weeder’ during the warm months of the year. I pull all the millet seedlings and such but let the sunflowers go to town. It’s so much fun watching the goldfinches and Baltimore orioles feed on them.