Those bags become trash bags for the bathrooms and bedrooms inmy house, serve as lunchbags, used to help clean the trash out of my car, pick up dog poop etc. A frugal person can find many uses for them, produce bags on the other hand are too flimsy to really have a secondary use.
“Those bags become trash bags for the...”
So, instead of passing a law banning the grocery bags, just pass a law prohibiting use of any other bags for trash disposal. Groceries in - garbage out. It’s a win-win!