OP
davesparks
Really I am sure that you can follow that the specific wording of the phrase "additional protection device to protect people from drilling holes into cables" would be interpreted as "protect people from the effects of drilling holes into cables" or "protect people who are drilling holes into cables".
A slight miswording of a phrase is not something to get steamed up over.
Yes it is, an electrician should be a skilled tradesman in a technical trade. If they can't get something as basic as this right then they should not be allowed to practice the trade as they could place people's lives in danger