They are matching the diversity of the schools' recruiting efforts. So yes, you could say they are (perhaps) unbiased vs their input, but their input has problems. In other words, their selection of schools to recruit from means they are outsourcing the distribution of your their candidate pool, and the GP poster is not happy with that aspect of the result.
If it doesn't match your society or customer base, and you think those things are important (I do), then it's bad.
(The reasons why I think it's bad are complex, so I won't belabor them here.)
If it doesn't match your society or customer base, and you think those things are important (I do), then it's bad.
(The reasons why I think it's bad are complex, so I won't belabor them here.)