Of course, those are two completely different statements, as I'm sure you know:
> you don't see women in engineering and leadership positions is due to them being biologically incapable.
> I’m simply stating that the distribution of preferences and abilities of men and women differ in part due to biological causes and that these differences may explain why we don’t see equal representation of women in tech and leadership.
And having read the full document (or even just the bits I quoted in my comment above), you surely also know that he was very explicitly not imputing population-level averages onto individuals. Damore's critics have been very openly lying about the contents of the document; there's no charitable way to interpret their claims.
To be quite clear, I don't think Damore is a hero (his politics are more conservative than mine and I don't think he handled the fallout particularly well), but he was clearly fired for claims he very explicitly didn't make[^1], and his critics are just doubling-down on what can't be described as anything other than trivially-verifiable lies.
[^1]: Even Google's legal team knew that they couldn't get him on those bases and instead they argued that criticizing Google's hiring practices implied that some of his coworkers weren't the best candidates for the job thus creating a hostile workplace. Of course, criticizing Google's hiring practices was absolutely pedestrian at Google at the time, although the argument was that Google's hiring practices were biased toward whites, men, etc. This is pretty obviously just pretense to fire him for ideological transgressions.