Quote: "Incredibly the author quotes all sorts of Catholic papers but never the scripture. Perhaps this is the true error."
Roman Catholicism has two sources of authority: Scripture and Tradition. Thus, the lack of Biblical references is no problem for the RC.
These days it's more tradition than scripture.
Which source is considered the "higher" authority? It seems in this case that Tradition is contradicted by (but nonetheless trumps?) Scripture. Still, this should be read as a University Professor's attempts to interpret Benedict XVI's Nov 30th address within the context of various earlier doctrinal pronouncements, and not explicitly as the words of BXVI himself.