I can think of another boss who was as sold on the idea of training the techs as I have been, and really spent the money to get a quality trainer for every system in the truck, and each tech spent 1 day month just doing training. it was a real help throughout the rest of my career (so far) because he was not making sure the customer saw we had checked off some box, but was making sure we understood how the thing really worked.
This was also a manager who was far more concerned for our moral as for making sure we started our day at the given moment. I know he figured that if we were glad to work for him, we would work better than if we were not as happy about the way things were running at the company level.