I understand what he said. I also agree that he's difficult at times and very opiniated. But sharing his opinion is fine. The article you link to? The QUESTIONS mention BSD first (go ahead, check it) and he speaks his mind.
Do I agree with what he says there? No, I actually migrate a couple of things from Linux to BSD this very moment. But you cannot seriously compare "Guy's asked about BSD, says he doesn't think it matters" to "So, there's this cool SMTPD we built. Let me show you some examples. We could totally build filters and instead of example.com we're going to filter 0pointer.net, you know? That idiot?".
That is NOT the same thing. Plus, that article was supposed to show of what you can do with opensmtpd. Filtering? Cool. Filtering because you feel slighted? Awwww... Poor kitty.
The author of that article very well might filter gazillion domains _on his very own server_, but for some public "This is how you can create your own filter" text you should use a neutral example. Or .. people like me might shake their head, sigh, be disappointed and move along and share their frustration elsewhere (like.. here?) a bit later.
Well, I did grow up on a reservation in the US, so some of my speech might have some localisms, but English is my first language.
So, I will restate my first sentence: Why didn't you submit the link http://undeadly.org/cgi?action=article&sid=20130130081741 then put your opinion of the writer given his example as the first comment?
As to the rest, the questions in the article mention BSD because of his previous statements that others in this thread have linked to. He has stated those opinions strongly without prompting by making proposals.
Judging a whole OS by one guy's article is pretty poor. I assume you boycotted Linux over the "monkeys" comment since that seems much worse than this one example came from the lead of the whole project?
Again, submitting 'So I think this isn't nice' never came to my mind and adding this here was (ignoring attributes like 'useless' etc) a spontaneous 'You know what I recently found?' kind of comment. This was blown way out of proportion by now. My bad.