Re-read that and, if you can, try to realize how asinine that statement is. Of the few Apple networks that I'm familiar with, I can tell you that they are no less prone to any of the issues that any other Server/OS environment would experience. Spotting you a 70% decrease in computer/network maintenance, the proprietary nature of Apple computers would still be more expensive to maintain due to the fact that the hardware cost is double what a PC is, and the extremely small pool of individuals possessing the knowledge makes cost not a factor, but the factor in why Apple has a 6-8% market share. Do you really believe that a mass change over to Apple systems would eliminate all computer maintenance issues? Really??
To me he sounds like a Unix guy from the 80's who is still bitter that their hayday of charging whatever they wanted to run the computers is no longer there.
Unix was replaced by windows as mainstream servers because they are cheaper to maintain and buy. Either that or the CIOs and CFOs in the world's largest companies are really really stupid (and I doubt that many people in that high of a position are stuipd).
Your question implies that I made such a overreaching statement. I didn't.
Switching to Macs doesn't eliminate problems - but it significantly reduces them compared to Windows. Macs are a good way for an enterprise to boost productivity and reduce unnecessary expenses.