He's hinting at the truth
There's an element of truth in what he says. Not literally, but in terms of Windows Administrators.
As a Windows Administrator (as well as Linux servers and Mac clients, although WinNT is my core) I see and hear of so many people that because they know what the registry is and have used CMD to ping a server they think they know what they are doing with Windows.
The world of OSS is very different... because the usability is crap. (I'm not knocking OSS, some of the software is 1st rate). Because OSS is so hard to use, particually at a technical level the home IT "professionals" ignore it and don't bother. So you get a load of people who after 'tweaking' the registry on a WinXP box and have a BT Home Hub setup call them selves Windows Network Administrator.
The problem is a lot of them are crap, mainly due to the ease of use with Windows compared to other plaforms. (open or not)
From my point of view, I can see MS trying to change this. Comments above, introducing Windows PowerShell and Windows Server 2008 Core (no UI at all!!!!!) are all indications that MS has had enough of the bad rep it gets compared to a lot of the OSS movement. How do they start to change this rep? By stopping stupid home users who can setup a simple wi-fi box from blagging their way into Network Management and Administration in a Windows environment.
If the enterprise side of Microsoft's business is as hard to get into as Novell's then it won't get as many home users playing with it's OS in a corporate environment.
Windows Administration consists of:
(Stupid home user pretending they can network x 100) + Experienced and knowledgable real Network Admin = a lot of incorrectly configured WinNT Networks with MS getting the blame.
Microsoft is acknowledging this and is trying to stop the blaggers from jumping into WinNT admin without knowing what they are doing. As everyone knows, the majority of downtime is caused by human error. Get a more experienced and knowledable human behind the console and you get less downtime. Less downtime on Windows Server = less slagging off from OSS advocates about Windows and less bad press for MS.