Yes, we should. But before we do, people still have to make choices ("should I adopt this gender-equality policy or that one?", "should I teach kids these of those ideas about gender-equality?"), they aren't going to wait for science to catch up. And before we have a definitive answer, we admit we don't have it, and let people make their own bids in those choices. And also discuss choices, and also question them.
Obviously. A well constructed argument requires minimal effort - and avoids flamebait and opinion - so it's easier to focus on the actual points...
> There's enough uncertainly in this question to make both opinions valid, and allow people to pick the one they like.
We should be trying to arrive at the truth, not arbitrarily picking opinions based on feelings or whatever fits your world view.