I am wondeing if you are a pilot or not. As a pilot and past instructor, I think you may not be aware of all the facts of such a flight. He is in a low wing aircraft, so does not have the same, below visibility, that a high wing would afford...
I have seen a parade filmed by Drone, and they were NEVER over anyone. Its unnecessary, and any production company that saw their insurance estimate to do that, would immediately start running tether lines. you can count on that:D
Call me a rat or anything else you like - promoting drone safety is part of being a conscientious pilot. To that end, I sent a little note to the Nashville FSDO just now.
Pretty fun. You're complaining about people going after your stuff without considering your local laws, while posting on someone's post without considering their local laws? :D
Don't let Dronecation get to you :)
Dronecation appears to think the problem is people "ratting" and "tattling" on others, while concerns about public safety promote hysteria. I doubt there is anything you can say or show him that will change...