Well not really. They could lie before under this law:
"790.10 Improper exhibition of dangerous weapons or firearms.--If any person having or carrying any dirk, sword, sword cane, firearm, electric weapon or device, or other weapon shall, in the presence of one or more persons, exhibit the same in a rude, careless, angry, or threatening manner, not in necessary self-defense, the person so offending shall be guilty of a misdemeanor of the first degree, punishable as provided in s. 775.082 or s. 775.083."
The new law does NOT give them anything they didn't already have. It just allows for "brief" exposure. The PROBLEM is they didn't define BRIEF!