Now extend your attitude to religous belief. All the parallels are there, including believing others are inferior (certainly islam). Should they be done as well? You are infact imposing a moral belief system. Once upon a time it used to be wrong to not believe in god. Well similarly you are saying the same about gender differences.
For heaven's sake let's not take this into religious flamewar as well. (I'm sure you didn't mean to, but we know empirically what sort of effect this has.) We detached this comment from https://news.ycombinator.com/item?id=15021907 and marked it off-topic.
Certainly the fact that some people believe in supernatural things (ridiculous, right?) but are allowed to state these beliefs despite the fact that on the face of it they are far more extraordinary than the extremely plausible some people are better than others in someway due to the differences in their genetics...
The answer is of course that the prevailing pc mainstream does not feel threatened by these daft belief systems (beyond fighting creationism in schools).
Anyway, you may be right that it is currently irreconcileable.