No argument from me here, makes sense to me.I can only speak for my situation, but I'm satisfied with the troubleshooting process to prove it was the wire. See the steps in the dealer invoice.
Long and short of it is, if you get a misfire on cylinder 2, clear codes and swap spark plug wire from cylinder 2 to cylinder 1 and the misfire condition follows to cylinder 1 then it's not either cylinder or either spark plug it has to be the wire.
I think where he was headed was more along the lines of which came 1st, chicken or the egg?
I don’t think there’s any doubt the wires are a problem, but from what I’ve read on this forum it doesn’t sound like there’s been a 110% determination as to what is causing that - is it simply inferior/faulty wires, or is there more to the story?
I can’t speak from personal experience as mine is a 6.7, just going off many other comments I’ve read from others here.