Did I really write 80% of my diary on Summers?  Granted I cited him relatively often, and granted he is the central figure in this current instantiation of this dialogue, but that doesn't mean my diary is "about him" - it's about the issue and the dialogue itself.

There's a difference between talking about somebody's ideas and talking about somebody: for example, philosophers discuss Plato pretty often, but they don't talk much about his actual personal qualities or lifestyle (man-boy love, whatever else).  They talk about his ideas, his words.