Earlier quoted context omitted.
Again, literally the only way you correct for unconscious bias is conscious bias. Where did you get the mistaken impression that it's supposed to be comforting knowledge? If your target is X = 0, and you think or you've been told that you act as if X = -2, then you act as if X = 2 and hope for the best.
Alternatively, if your target is 0, and you've been told you act as -2 but you're really a 2, your bias correction will make you an extremist at 4. Which is a far more common outcome of "unconscious bias correction policies" than actual progress.
Yes, and this may very well be happening too. I believe the consensus has been established that the average was roughly -2 (meaning prior discrimination against girls in education), but individual teachers who were already better than average would be more liable to overcompensate.