You're perfectly entitled to disagree, but you're also missing the point. The NIC and Drivers are fully supportive of Windows Server 2012 R2... it is after all just Windows 8.1 underneath all the server stuff.
In addition, I'm not asking them to support anything extra like Android nor MS-DOS, and it;s silly to suggest that I was. Their driver already supports Windows 8.1 and by extension Server 2012 R2 (I know this because I have made it work already by editing the inf file). The issue is that they have artificially blocked the installation on the server operating system. As such, they are dictating that you cannot use this PC as a server.
As it happen though, I have worked around this artificial limitation and am using my PC how I have decided to use it.