FPL went to aluminum meter cans decades ago. The 3R meter mains are aluminum too most of the time. My meter can is over 25 years old and it is still shiny.
I have not heard of anyone stealing a meter can but they might try to strip out copper wire. I doubt they would do it twice after that service drop started sparking.
One issue that nobody brought out yet against exterior mains is the joker that turns the power off & runs. A local solution is a 'breakaway' padlock, which is OK with the first responders.
Most mains are on the exterior here & residential branch circuit breakers are too, & pranks do not seem to be a issue.
