The article mentions OpenBSD 4 times (vs Linux 2, Windows 2), in all cases directly comparing a default or feature in OpenBSD to the same default or feature in FreeBSD. Whether the author is an OpenBSD fan or not, I didn't come away with the feeling that OpenBSD was the suggested solution to the problem.

I found it interesting, anyway, but didn't come away with any inclination to use OpenBSD on my next deployment.