I doubt power companies have the time to travel around randomly cutting down invasive plant species.
Yes you can look for acorns but they are prized by wildlife as a food source. They are shaped like Good & Plenty candy or like Ike & Mike candies, round at both ends. Kind of like a turtle egg. They are not very big, maybe 3/4" long or slightly larger. They are chocolate brown with varying amounts of mustard yellow.
You are in Delray Beach. I used to go to Flamingo Gardens all the time for Orchid Shows and judgings all the time. They have dozens of HUGE live oaks there.
But the reason Brazilian pepper does not make sense in my mind is, it is not a tree, it is a shrub. Shrubs don't produce 8 to 10" diameter stumps. Live oaks can get to be 3-4' across.