To be clear, my argument wasn't directed against Murray, but at his sources. I don't doubt that Murray more or less correctly measured what he was trying to measure (whether or not that measurement has whatever significance he attributes to it, I don't know; I haven't read his book).

My real interest is in "debunking" the notion of the "common-practice period"; I would instead prefer to call the period in question the "Germanic period" or something similar. It isn't really a question of quality: personally, I happen to agree that there is something special about Viennese classicism (i.e. Haydn, Mozart, and Beethoven) but I wouldn't assign a similar specialness to Pachelbel and Reger while leaving out Gesualdo and Boulez.

ETA: Also, to be clear, my claim isn't that German-and-Austrian-influenced historians unfairly leave out or devalue other composers from the period 1600-1900; it's that they elevate that particular period itself to an unjustifiably high status relative to other periods (which in my view has hindered the development of music theory).