Re: "doing "what everyone else was doing at the time""
"some of the brightest and most effective engineers and scientist I have worked with have been part of the Civil Service. "
Did you miss the bit where I specifically said I was referring to the people in senior roles with no such qualifications? To quote the famous Civil Service memo from before WW2 "Scientists should be on tap, not on top".
Otherwise I agree with your post; there are some very good people in the Civil Service, I have met them. And you know what they complain about? People with no qualifications making policy in the interests of "good administration", i.e. keeping people like us in charge.