The ultimate goal of democracy is to allow people to organize themselves and their society in whatever way they see fit. If the enforcement (or lack thereof) of this law is not in strides with national law, I don't see the problem with this ordinance. It is a way of putting some more social pressure to the habit of smartphone usage in public spaces and the daily life of people in this town. People who don't follow through suffer literally no consequence, but I bet it will change habits for what the inhabitants of this town think it's for the better. Let them have this, I say.