This is about the most complete take-down of a biographer as I've seen in some time. It has a certain splendor to it.
False Portrait: On Deborah Solomon’s Norman Rockwell
The problem with contemporary expectations is that, unless one is to reveal something specious or scandalous about the subject, it's pointless to spend money on publishing the biography. Also, most academic work has to be oriented to the cult of "victim", as fact and original thinking are absent in the universities these days.