I'm naturally inclined towards BSD simply because of its extensive history (though I've spent little effort towards it thus far), but even still this article is wholly unconvincing... of anything. It really doesn't say anything about ZFS, jails, or even the current state of affairs beyond a respectable number of packages (and more importantly, linux compatibility); it just assumes you already accept that they're better, and for some reason haven't already switched?

It also badly requires editing

Hopefully someone has a better argument for FreeBSD than this... mess