OTOH, if I've been summoned to fix something for you, and I introduce myself to you, you damn well better respond in a polite manner, not just hand me the offending object and glare at me silently. Manners go a long way.
Honestly though, I question his whole premise. As he quite rightly points out, he can't fix a car (or probably wire a light fitting, fix a drainage system, or install an air conditioner), and nor should he. These roles have all been specialised, which improves their efficiency by allowing more complex and specialised techniques and hardware to be used. Computer systems are no different, and it not obvious to me that they should be an exception to this trend.
Honestly though, I question his whole premise. As he quite rightly points out, he can't fix a car (or probably wire a light fitting, fix a drainage system, or install an air conditioner), and nor should he. These roles have all been specialised, which improves their efficiency by allowing more complex and specialised techniques and hardware to be used. Computer systems are no different, and it not obvious to me that they should be an exception to this trend.