this is a good analysis
https://www.youtube.com/watch?v=8TBXz2_o0KM&t=570s
IMHO it's far from a good analysis.
Around the 3:00 mark, the speaker says the shooter created a "conflict." Sorry, but I don't think politely pointing out to someone that he/she is parked in a reserved space and doesn't have the required permit is necessarily initiating a conflict. No, we don't know that his initial words were polite, but we also don't know that they were not.
At around 3:10 he says "Just because you're carrying a firearm does not give you a right to be a jerk, it does not give you a right to get after people and tell them what they should be doing." In reality, everyone has a right to be a jerk, and everyone has a right to tell someone that they're breaking the law. Whether or not you may elect to do so is a personal decision, but we all DO have that right. And it's not dependent on carrying a gun.
4:32 -- "I gotta be honest with you, stand your ground has nothing to do with this event, at any capacity." The sheriff of the jurisdiction seems to disagree, since that was the law he cited in announcing that his office would not pursue charges unless directed to do so by the prosecutor.
5:28 - "Pointing a gun at him, pointing a firearm is not deadly force -- it's force, but it's not deadly force." Florida statutes don't seem to have a definition of "force" vs. "deadly force." In most states, pointing a firearm at someone IS deemed to be use of deadly force. It appears that court precedent in Florida may have established that pointing without firing is "force" rather than "deadly force."
6:04 - "Now notice there's about two seconds here and the problem we're going to see is, is between the draw and pointing it at the guy, and then he took two seconds and the guy was backing away from him and you could see him quartered away from him when
the shot went off." The elapsed time on the video does not show a two second delay between drawing and firing. And I still say the video clearly (as clearly as is possible with a grainy image) shows at least three shots, not one.
It goes on. But thanks for posting the link, because I have now identified a trainer from whom I absolutely would not take a course.