Theo de Raadt is a delusional fellow. He thinks Linux Developers all hate Microsoft. How many Linux Developers are on this forum? None. Linux Developers like developing Linux, they dont necessarily hate anything.
Personally, I think this article is a peice of junk with little coherent argument. I have asked BSD users (note: Im a BSD User as well) a million times "Why is it technically superior". Not once yet have I been answered.
With OpenBSD on one of my machines, it kept crashing. The mailinglist for OpenBSD claimed this was because of my hardware. Nonetheless it ran Linux flawlessly, and it runs Windows 2003 flawlessly. Hardcore BSD users are arrogant, delusional, paranoid little creatures that jump out and bitch about Linux because they know it will get them some attention. Their little operating system is about as important to the world as a tea leaf is to the east india company.
However I find OpenBSD a very stable and useable distribution for the jobs on my home network that I don't want to have problems with. I don't have to touch it and it doesn't have to touch me, a perfect marriage. It also runs on one of my older computers and is rather secure. The advantage BSD has over Linux is simply that it is usually: a lot more simple. It works. Linux changes a lot more than OpenBSD does. However their are Linux distributions that easily compare in simplicity: Trustix Secure Linux for example.
Anyway thats my view from both sides of the bar table.