It's giving you some things to think about without coming to a conclusion for you, and it's interesting how disorienting you find this.
It's not just going to go away because it's a dead horse. That's like saying that anti-war protesters should just stop showing up, "because, duh, we all know war is bad, so just put your little placard down, already."
A blog post needs to do a lot more than that if it is to be deemed a success. Especially if it is quite long. It should bring some insight. @nkwiatek thinks this particular blog post didn't bring much insight. If this is true, then it's valid to use this as a criticism. A long blog post with a reflective tone implicitly promises to bring something more to the table than "I think X is wrong".