Yes, Gary can tell it like it is. I think he told on me in one of his rants about misuse of the word "hiss" where there are no sibilant words. I had such a mistake in my novel, which he looked over. I was glad for the "beatdown" because he aims for writers to learn from their mistakes.
He shames me with his productivity; here is a man who has had two heart attacks, has suffered debilitating bouts of depression after losing both parents and a grandmother within months of each other and going through a divorce about the same time, has to work two jobs, suffers from some affliction of the nerves in his hand (which he's had two operations on), has had spinal problems stemming from a childhood affliction, not to mention the scars of an abused childhood, and yet he can finish off numerous stories and is always striving to reach his deadlines. And I can't seem to finish off one scene, let alone a whole novel (working on my third).
I truly admire him.