There's a whole spectrum of ways to disagree, all of which have value in the right situation. Here, a good portion of that spectrum has been lobbed off in the name of niceness and nothing more. Is it worth it? Decide for yourself. I say nay.
Bonus disease: PG worship. Don't get me wrong, he's a brilliant guy; we're all here (directly or indirectly) because of him. But it goes too far.