Torch you are exactly right in all you have said. I do have to decide for myself and my company where I draw the line on things like this repair. Just so everyone understands the important part of this job was to make sure that the connection was tight! If it is loose at all it will create heat, which will melt the wiring, and then it is down hill from there.
I also have seen many bad homeowner wiring jobs. I just got finished rewire a shop/home where the original owner had built a shop, with a permit, then built a home inside the shop without a building or electrical permit. Gal buys the place and then discovers all the problems. It cost her some 60K extra to have it all fixed! Not just the wiring, but everything.
Most of the time the difference between what a homeowner does, and what is proper is not much work, but a world of difference in safety.
Being licensed and bonded, I assume responsibility for what I do. I also recommend pulling permits when required to do so, to keep oneself better protected. Not everything can be foreseen, but one must do, do diligence, in the direction of safety.
I do not recommend anyone follow my lead without strict supervision from and expert.
All I need to do now is pass a test and I will have the title of Master Electrician, and the only difference it will make, is I will have another piece of paper to keep my back side clean.
More to come later.