There are reasonable arguments on both sides, which rational people can debate.

That's the bigger point here. Not that there is a slam dunk argument on the side of biology or society, but that we don't know where the exact truth lies, and we need to be open to discussion about it in order to find out. As scientists have been saying all along, both biological and societal factors matter.

What I hope we can all agree is unreasonable is to fire someone for just trying to discuss this.