And he also pointed out that people are scared to actually talk about these things at Google. Considering he was fired, that seemed like a pretty on the mark observation.
If someone points to the fact that there are many more blacks in the NFL than can be accounted if football talent is randomly distributed in the population and points to some evidence that maybe there are biological differences behind those numbers, the worst thing you can do is try to punish them for thinking. If they are using bad data, address that. If they are making a logical error, address that. But you can't just try to punish them because they looked at the statistics and the evidence and reached a conclusion that you don't like, but don't want to explain why you think it is wrong.