If I linked to you examples of researchers being fired or harassed for publications that go against racial equality, would you consider the fields they were in under civil rights 'ideological capture'?

Yes. Standing behind an idea doesn't require that you censor all attempts at disagreement. Even the most mundane, universal, and virtually unquestionable ideas should come under attack, lest we forget why the attacks are wrong and lose the ability to explain why our convictions are right in the first place.

In other words, it's easy to argue that racism is bad. If the only way society can convince people of this is by harassment of those who disagree, we evidently don't remember exactly why racism is bad. We should be drawing those who advocate for abhorrent moral evils into the limelight and using the superiority of our convictions to demonstrate why they're wrong, not censoring them and doing nothing to prevent more misguided people from going astray.

If indeed gender and sex are uncontrovertibly distinct, it should be trivial for academics to address arguments to the contrary. A refusal to engage suggests that one's ideas are flimsy rather than strong. A good case-in-point is the user below who has decided to find an arbitrary reason to dismiss my arguments rather than addressing them. That reeks of loose conviction.