|laziness, impatience, and hubris|
I haven't seen any links other than the one you gave, and in other programming language camps I haven't seen the connection to linguistics comes up at all in discussions. It's just not on anyone's radar(sure there are theoreticians thinking about it, but not your average business developer). I like to think the linguistic aspect is a novel feature of Perl and damned clever of Larry to pin point.
The entire field of computational linguistics is in its infancy and we just don't currently posses the technology to formulate the deep questions about how exactly the brain functions with respect to language. CS is in its infancy too, so there's going to be a long wait until these two fields can build a bridge and connect in a deep way. Hopefully future language creators will steal the linguistic idea from Perl and contribute to experimentation in the field.
And there are a few really interesting ideas which I hope will be on that bridge, such as:
1) the validity of the Sapir-Whorf hypothesis and its application to programming languages. It's true that perl hackers see the world a certain way due to their language, as do lispniks, rubyists, etc (and we all know those in the java camp see a medieval world, I kid!)
2) Can we reach the point where we can create "deep AI" and what will the language involved be? (Don't say Lisp!)
And if you end up with any particularly good links, please post them here so others can find them and read them.