Okay, fair enough. The author did permit himself to go beyond constructive criticism and resort to pot shots in a few places. I don't think they invalidate hi

Okay, fair enough. The author did permit himself to go beyond constructive criticism and resort to pot shots in a few places. I don't think they invalidate his point entirely -- and I don't see the problem with writing an open letter -- but I agree, the pot shots are unbecoming, and suggest that the author is feeling threatened by KA. Edited to add: the first quote is blunt, but not, I think, out of line. I do think I detect a bit of condescension in the latter two.