I know what you mean, I worked for a firm who had three electricians, two of us had learn new things over the years, and could work on nearly everything on site, in the main the first tool used was the PC, interrogating the PLC was normally the first step, but one electrician about 2 years from retirement just did not see why he should bother learning new skills, it would be wrong to say he was a bad electrician, he was very good, and I am sure he could tell you exactly how to set up the dash pots on the star/delta starter to give the required delay etc. But we did not have any starters with dash pots, most were either soft start or inverter drives.
Trying to explain how a three phase motor could not be connected to the three phase supply but needed connecting to a single phase supply through an inverter took some doing, can't teach an old dog new tricks etc. Many of our three phase motors were wired delta for 230 volt, not star for 400 volt.
As to health and safety, we had as with most machines today emergency stops, but a lack of interconnection to air system, so hit the E-stop and air motor still ran.
What has happened mainly due to Part P is we have a them and us situation, the domestic electrician and the commercial electricians no longer swap around, each part of the trade has become specialist, shop fitting, office work, factories, petrol/chemical, installation all seem to have put up barriers to stop electricians swapping between them, the whole idea of the journey man after the apprenticeship seems to have gone. And even at my age, I have never made off a mineral insulated cable except in collage.
But come the floods and a load of houses all need rewiring together, where in the 90's tradesmen from all areas would be able to turn to house bashing, today any emergency and there is a lack of labour.