I saw this group of guys at the Joe Nall event last week, he was between the control line area and the electric line , , probably 200 yards from line to Line, with the tree line and the GA control tower in between , to the best of my knowledge , he did not violate our control line air space.
The electric line was busy all week. They had a building event To help new modelers build foam trainer type models out if flat foam sheets, they flew at first daylight , all day and until late at night, it was a lot of fun setting around with the guys , enjoying a cold beverage and watching the electrics fly with all of the lights on , we refered to it as the nightly light show
I was unaware of any rules regarding FPV flying , My only concern was regarding them honoring our air space ,this particular model was very noisy thru the abrupt direction changes ,