It can't hurt you. You're not forced to read it.
Every time someone links to this blog, easily 50% of the comments devolve into nitpicking the style.
But hey look: It works!
It got your attention. It got many people's attention. It makes the point clearly without wishy-washy weasel words.
I'm fed up with the all-too-common corporate bullshit-speak of: "Agile may or may not be appropriate for all organisations, so you may need to tailor the approach to your specific situation."
That translates to: "It probably won't work, I don't know when or why it does work, so... good luck!"
Isn't it a breath of fresh air to hear someone state their actual opinion instead of dressing it up until it is unrecognisable?
"I just wish he'd just a more polite style!" you're about to say.
Then we wouldn't be reading it and discussing it right now.