I concede that my point about people defending themselves if they have no other choice is irrelevant, since the Law goes beyond that.
I read the Law. It seems to go to great lengths to avoid misuse. Except this:
(2) The presumption set forth in subsection (1) does not apply if:
(c) The person who uses defensive force is engaged in an unlawful activity...
Under our system of innocent until proven guilty, you must give the defender the benefit of the doubt. So, for instance, even if you had a gang member standing over the body of his rival, he could use the Law to his defense until he had been proven of having committed a separate crime. That seems like quite a burden to a murder investigation.
And this:
776.041 Use of force by aggressor. —The justification described in the preceding sections of this chapter is not available to a person who:
(2) Initially provokes the use of force against himself or herself, unless:
(a) Such force is so great that the person reasonably believes that he or she is in imminent danger of death or great bodily harm and that he or she has exhausted every reasonable means to escape such danger other than the use of force which is likely to cause death or great bodily harm to the assailant
This little tidbit seems to allow that an aggressor, as long as he is not committing another crime, is guaranteed to be able to use the Law to his defense if the fight goes against him.
Imagine that: you're minding your own business when a bully comes up and starts hassling you. You've had enough and so you start to fight back, kicking his ass like Ralphie in "A Christmas Story." You're kicking his ass so badly that now he's scared, pulls out a gun, and drops you. The whole situation is his fault, and now he gets to claim Stand Your Ground over your dead body.
This is how this law can be perverted to work against the people it's meant to empower.