As for me being arrogant, that is your opinion.
I have never called you arrogant, quit being so defensive. As far as the radio operator and the navigator, they had been removed before I was born in western aviation. As for the auto mechanic, there are still naturally aspirated engines and mechanic enthusiasts. The modern auto mechanic deals with something similar that we do, the life of a car is getting shorter as are aircraft. All of the technology and self diagnostic equipment the manufacturer can install to sell the customer an aircraft that diagnoses its self, can't help them when the unexpected happens. The AMT/LAE who has been around for a while knows to be weary of following a FIM as an aircraft ages you learn to expect the unexpected.