Yes, Rosenbaum tends to be problematic. Although I usually find his views to be interesting, I often can't understand why the heck he is having them. 
His approach seems to me very personal (something which I love), but he sometimes tends to disregard other personal approaches, while promoting a canon of his own.

I should read more of his work, though I'm not sure he's the mastermind many people think he is. But I have an issue with almost all American critics I know of, while I've also read far too little of their work to say anything of real value 

Guess I'm reading too much reviews on our Forum and disregarding the rest of the world