He speaks about the `distribution of preferences and abilities`.
Going from a distribution to state that `women are worse then men at engineering` is a false narrative and COMPLETELY different. You probably didn't realize that because you already made your own politically-correct version of the truth on that subject, and refuse any discussion about those topics.
For example, what he said doesn't say anything about two specific individual women and men abilities.
About your second point. That's the whole issue! Bringing up any point of debate or discussion on those politically-driven topics will end up pissing of some people (while a majority might agree, but will stay silent because politically incorrect). It is very very sad that this is the state of affairs, and that we cannot discuss those sensible subjects anymore without being fully ostracized.