That was ~accurate at the time; that period was more or less peak religious suppression in most of Europe.

It is accurate in one sense and highly misleading in another. Check out the Google Books link. A Chinese bureaucrat reading that description would have imagined entirely different "past sovereigns" (Chinese ones) and "heterodox doctrines" (differing from mainstream Chinese philosophy). By equivocating between established concepts and Christian ones, the Jesuits displayed Christianity as much less of a foreign ideology than it actually was.