I think any good argument against firing him has to hinge on the truth of what he said besides the group-think claims. Regrettably for him, I don't think there's much to most of it.
All good, except he did not make that argument or anything similar to it. He did not state that women inherently suffer from biological weaknesses of any sort. And no, his ideas did not harm anyone (except perhaps indirectly himself). Literally nobody got hurt except him, he is the sole victim of the ordeal.
I hope that you have read the document in its original form, which is a PDF with some (admittedly weak) references.
https://assets.documentcloud.org/documents/3914586/Googles-I...
It's hard to see a fair and general principle underlying this. People who publish false or mistaken things internally should be fired?
Seems like it must have gotten a few reshares to go viral enough for somebody to feel the need to leak it. I don't think we really know how widely it was read before it leaked though -- it might have been a big raging controversy inside Google, or it might not.
> Stereotype accuracy is one of the largest and most replicable effects in all of social psychology. Richard et al (2003) found that fewer than 5% of all effects in social psychology exceeded r’s of .50. In contrast, nearly all consensual stereotype accuracy correlations and about half of all personal stereotype accuracy correlations exceed .50.