I didn't understand what is meant by "pedantic"; the text deals with the descriptive analysis (sometimes measure by measure) of what happens in terms of structure (on various levels), harmony, thematic fragments, rhythmic variations, melodic variations, etc.
Useful if you want to go deep into the knowledge of musical discourse
In an essay by Boucourechliev on B.'s sonatas, at one point (p. 31) he seems to call him a "bureaucrat"... (in reality it seems he is also referring to Rosen)
"2. adj. and m. and f. noun. In modern usage, and mostly in a derogatory sense, one who, in teaching and study, continually refers back to rules, observing them and making others observe them with meticulous scrutiny and little intelligence;"
In an essay by Boucourechliev on B.'s sonatas, at one point (p. 31) he seems to call him a "bureaucrat"... (in reality it seems he is also referring to Rosen)
I don't know what you are referring to in particular but, since the one in the Companion is merely a descriptive and not normative analysis, it seems to me like a somewhat unfounded judgment. If anything, boring and not pedantic.