You bet that part of the law got their attention. And it's about time that all local would-be dictators are forced under threat of personal prosecution to allow law abiding people to exercise Constitutionally protected rights in ALL categories of the law without infringement by local laws and ordinances. It's yet to be seen whether or not all of FL's local prosecutors will enforce the new law concerning that issue. The heavily populated southeastern part of the state is very liberal and anti-2nd Amendment, and local officials will no doubt resist enforcing the new law as long as possible. I haven't lived in FL for over 15 years, but I well remember the Nazi-like officials who dominated local governments in that part of the state when I did live down there.
It's not up to the local prosecutor to enforce it or not enforce it. A violation of state law by a local official would mean the state Attorney General coming after him.