I have spent quite a bit of time about a kilometer from where this incident took place and in a previous life operated in CH for about 4 years.
The place is seething with wires and cables and most aerial work pilots come from experience as "flight assistants" with an operator and progress to pilots.
Intimate local knowledge is imperative if you operate as these guys do, or you will not last long!
There are a few ROT's that will help and you disobey at your peril.