I do more diagnosing at the airport than I ever did at the dealership or private shop world. You just have no idea how in depth big equipment is.
I think you put yourself on too much of a high horse. Your a certified tech, there's thousands of them out there, I've been there.
I don't understand your view because at least twice per year you post bitching about your career, no money, and wanting a change.
Sorry to be blunt about it but like I've said a 100x get out.
At the airport we go to all schools oshkosh, rosenbauer, MB, Ohio cat, and more. We diagnose issues daily, we have high dollar Bosch scan tools. We have software for our dedicated lap tops.
I cant believe you think that hourly paid mechanics are parts hangers and I think you're afraid of change.
I have been in your shoes, and glad I'm out of it.