"So if you, for instance, say in a firm, level voice at normal speaking volume that "the work is not up to standard and that it will have to be redone to met an important customer deadline" and, in response, she cries, are you then guilty of sex discrimination under the "reasonable woman standard"? "
Yes. There is a major engineering company in the Houston area that has that policy.
Seriously now, how do they go about instructing their workforce when personal accountability and corrective action is required?