Put simply, yes. It is. Even ignoring the almost all plastic build. The HD800 has far too many problems sonically to command that sort of a pricetag. A headphone with a cost of that magnitude should be completely free of deal-breaking flaws, like that wretched 10kHz peak that makes the treble into a cattle prod. Add in the diffuse imaging, poor bass response, lack of impact, unrealistic soundstage, and a very "soft" sound and it's just deplorable. It was hyper-detailed.
I'm pretty surprised how many people of a flagship headphone have modified their headphones. I certainly don't hear much about modding the HE-6, SR-007, LCD2/3. A good portion of the "details" this headphone provides is due to the lack of bass and hot hot treble.