The no camera thing is completely apart from the drone general rules. It's about the military areas. (on the Icarus map, the green rectangles).
Professional use is something very blurry. It is in France, it may be in Spain. I remember the days at the beginning of the 70s when reflex cameras were rare, and tourists taking photos on the Champs Elysées in Paris were taken off their cameras, for that the police claimed those were professional cameras...
Also in Italy I took photos of some good looking buildings in Rome, some years ago and got arrested by the army (they went after me with a Nato vehicle), who told me that that building was an official building, forbidden to take photos (not written anywhere). I have to show my Id and I have to show them I deleted the picture from my smartphone. Just imagining what would have happened with a drone.
However that's Italy and Spain. France has become a very cool country. You can do plenty of thing you can't anywhere else, even forbidden things provided there is not a huge rush on fines which brings money to the bankrupt administration. There is a fine for about anything and most of the things are illegal but no one cares...