The syntactic structure of both "code" snippets seems equally clear (or maybe "uncertain in the same ways") to me, though my understanding might be a bit off if the author has biased the comparison by following generally accepted use of whitespace with one language and not the other.

This looks like another instance of slapping a pseudo-scientific veneer on top of conclusions driven more by untrained gut feeling in order to pretend one's subjective impressions are firmly grounded in objective reality. It's like the phrenology of programming languages.