As I was reading it, I considered adding a comment to provide corrections and contrasting opinions, but then reconsidered, since it's just not worth my effort to crime-fight every time someone is wrong on the Internet. Furthermore, as I realized just moments later, I couldn't have sounded off on the piece even if I wanted to... since this author had decided not to accept comments for posting.
First, let me acknowledge up front this is absolutely within this blogger's rights. And surely there are a number of understandable reasons they might have made such a choice:
- It can get tiring cleaning up comment spam.
- Commenters can be annoying, poorly behaved, and sometimes downright abusive, and dealing with these jerks is even less fun than dealing with spammers.
- Welcoming input from users (even the "good" ones) essentially results in the creation of an (oft-time-consuming) obligation to engage with the community of commenters, or risk being branded aloof, detached, etc.
However, there's a much less, well, neutral reason to have commenting disabled: you can spout misleading nonsense and not get called out on it on your blog.
I no longer care whether a blogger's reasons for excluding comments on their blog are innocent or out of an intent to deceive. I've decided I'm no longer going to read no-comment blogs for the following reasons:

