BLUE PLS! SLAP IN THE FACE etc etc. The DK Unholy DPS thread is not the correct place to complain about the quality of Blizzard communication on the official forums.
Thats some appalling customer communication. I can't seriously believe he posted that.
Whether it's the case or not he shouldn't be saying 'we haven't fixed the problem because we want you to stop using that spec and start using these other worse ones'.
Thankfully it's not more than 100 or so DPS lost, which with todays easy raiding isn't an issue. If we hit Ulduar and it's still not fixed, then I agree we have a problem that needs addressing. For the moment, I think it's safe to say that the reason it's not been done is its not viewed as terribly important (which in the overall scheme of things, it isnt). Lets just wait and see what happens.