Yes, Rummy hit that nail squarely on the head. Many others have as well. But McQueeg still squeals like a stuck pig. Hey John, everyone knows this is a fact.
The flack is always the heaviest when you are right over the target.
So what about the actual subject matter of this disagreement between Rumsfeld and McCain. Who do you think was right about the surge, now that we've seen the end effects of it - Rummy, who opposed it, and McCain who actively promoted it, even though it was considered political suicide at the time?
That is a far more important matter than McCain's personality flaws.