Oh, I see now. The camera tech does not trust their customers to have the right technical knowledge of the device. I can understand their point as someone who has seen some crazy stories from tech support who have some funny, ignorant customers like the one below:

One day a user calls because her computer wouldn’t power on. OK, so I take the trip upstairs and sure enough no power to the CPU or monitor. I follow the power cords to a power strip, but I couldn’t see the power switch. A head of lettuce in a grocery bag had fallen from her desk onto the switch and turned it off. We still laugh about the ‘Death by Vegetable’ ticket… Source