Having worked in higher ed for 10+ years, let me tell you, in a lot of disciplines, they don't vet as much as you might think.

Certainly, high profile/cost courses with lots of interest in teaching them are, but the big money makers such as con-ed, distance learning and apprenticeship take the most convenient person available and throw them in, often at the last minute with zero preparation.

I don't see how this differs from ureddit.