Eh, I'm not going to say this is wrong, but pretty much like all advice, it's kinda cheap without data. Like Dale Carnegie may be very famous and have a book and say "Use people's names all the times and your conversations will be great" but who actually knows if that makes a difference without some controlled outside study.

I see a lot of people really eager to tell other people how to staff, but a lot of them sure do seem to disagree, and most people I know get to staff anyways without any particular skill after a certain age (title inflation?) including myself.

My smell test for an engineer is -- are they trying to quantify the size of everything in terms of impact, or are they just reacting to whatever customer knocks on their door?