The next level up we start to see responses to the writing, rather than the writer. The lowest form of these is to disagree with the author's tone.
Though better than attacking the author, this is still a weak form of disagreement. It matters much more whether the author is wrong or right than what his tone is. Especially since tone is so hard to judge. Someone who has a chip on their shoulder about some topic might be offended by a tone that to other readers seemed neutral.
So if the worst thing you can say about something is to criticize its tone, you're not saying much.
How are we supposed to feel sorry for you?