Strong acknowledgement by Apple that they depend on "security by obscurity"
I'm no expert and I'm not putting this across as fact, google wasn't terribly forthcoming (so please correct rather than flame me) but wasn't there a telnet flaw found in osx recently? In which case surely Macs should not ship with the telnet and/or ftp daemons enabled by default?
They've probably changed it since if that was the case. Still, if the marketing people don't even want the issue of security in OSX discussed, that's to me an acknowledgement that they don't want any awkward questions from experts on other parts of OSX that are a bit "open."
Basically most security experts discuss things in terms of "hardened" systems - which doesn't always sit well with something that you're trying to ship to customers as easy to set up. This is why it amazed me that Ubuntu did so well in that mac/linux/windows security competition they had recently, it's not a hardened distro designed for serious commercial use and has all kinds of stuff installed and enabled that could be vulnerable.