Well, not entirely their fault. Your GP (now my GGP) began by stating:
>> I honestly don't get how this is even a problem.
Which can be interpreted not only as "How can this even happen?", but also quite reasonably as "So what's wrong with that?". The parent comment to yours (GP to this) answered the latter.
> Why is Microsoft having problems finding designers that use and know both?
and you totally failed to answer that.