I don't understand how the contrast -- using category theory to derive notions of computation and something attempting to patch up Perl's object system -- relates to the rest of the essay.

I don't mean to be coy, but what's the point? Is it that business skills are important, too, and that universities (and their CS departments in particular) are underserving the computing industry? That's what one of the comments (http://use.perl.org/comments.pl?sid=42485&cid=67709) seems to indicate. The American education system needs some work, but I think it's a mistake to see a university education as vocational training: the "fields" in a university don't correspond to "fields" in the world. It's a coincidence that computer science roughly corresponds to a field in high demand these days.