Although I agree with you that it can be done; where does that leave Microsoft's core feature wrt 2012; the by default desktop-less installation? Worse; where does that leave remote administration?
The only reason I repeat this particular issue is because I honestly think that 2012 has a lot of potential. If only they would hurry up and backport the admin tools...
Its not only my heavy disdain for the metro void here, but also because I think its much more likely that there are more Win7 desktops to be found in an environment where a new 2012 server is about to be placed. I don't see admin teams updating to Win8 merely because its the only way to admin the server remotely.
So yeah, in my opinion it almost seems as if there is a bit of arrogance at work here. Everything seems to be put to work to try and get Windows 8 out there, no matter what. And THAT is what bugs me the most here. Microsoft used sit WAY above that.
Windows Server 2008, release date 2008 (obviously). It wasn't fully aimed at remote administration as 2012 is, yet was shipped out of the box with WinRM 2.0 (Powershell). And they still backported these features, also onto 2003 and up. In no time!
Also important to note; obviously you could admin 2008 using Win7 out of the box and more easily (PowerShell) but that backporting (see above) also allowed this kind of advanced access straight from XP. Even though at that time Win7 had already established itself as the de-facto new "liked" Windows.
Server 2008 came out, Win7 obviously natively supported the critter but in no time did MS make sure XP could /fully/ cope too. In no time meaning no more than a few weeks (iirc).
Even though they could also have said: "Nah, XP admins should get win7 or get used to remote desktop sessions when using 2008". They didn't.
THAT is what upsets me so when it comes to 2012. I get the feeling this is more about pushing Win8 down our throats than delivering the (IMO) optimal admin experience which MS has always done so far.