> University students don't become experts in anything.
You're absolutely right. A bachelor's degree is supposed to be a mark of well roundedness, not specialization.
> English literature students, for example, just leave with some long essays under their belts, they don't graduate as well-read authorities on different epochs of literature.
They're not supposed to be authorities - if they wanted to dedicate time to become authorities, it's well understood that you'll have to specialize in English lit, likely in some kind of subfield, which is what a masters/PhD is for.
> As in, if a member of the public needed any of those skills/knowledge to do their job, they could acquire them privately without much difficulty.
That doesn't necessarily mean that University education is all for naught. University education purports to teach us how to be better thinkers, not necessarily produce people who are skilled in one kind of thing.
The latter definition that I gave above is what the article is trying to defend.