[fragmede]

in terms of tools, I absolutely want the nuclear power plant engineer to use a wrench and pliars and tongs and a forklift and a machine while wearing a lead lined safety suit instead of wandering over to the reactor in a t-shirt to pull out the control rods with their bare hands. You could be Edward Teller and know everything there is to know about nuclear physics but you're not getting anywhere without tools.

to your point though, a person needs both. all of one and none of the other is useless. You don't want someone who doesn't know what they're doing to play around disabling safety systems so you don't get Chernobyl, but for the everyday crud website you can just hire the coding monkey at a reduced cost.