Cappt
I started thirty-five years ago in the aircraft maintenance business repairing metal aircraft, the last twenty years I have been increasingly involved in composite repair and in my view the Boeing statement has a good foundation in truth.
To the metalcentric ways of thinking that pervade this business I can see how you might come to this conclusion but the repair techniques required for composite structures are very different and should not be seen from a "this is how we do a metal repair" point of view.