[timr]

Ehhh. I suspect an information asymmetry problem -- that is, the GP doesn't know what his/her colleagues actually know -- coupled with a tendency of researchers to let work drift by when it isn't in their wheelhouse.

While I've known a lot of PhDs who know nothing about statistics or programming or some other specific skill (nobody is an expert at everything), it's pretty hard to make it through a good graduate program while knowing none of these things. What generally happens is that domain experts try to keep their minds focused on their domains (where their value is highest), and let non-specialist work fall to generalists. Generalists then (sometimes, incorrectly) assume that the specialists are useless outside of their niche.

I'm not going to say that there aren't incompetent PhDs, but it's a bad assumption to make, in general. You don't assume that your CEO doesn't know how to clean a toilet simply because she lets the janitor do it.