Earlier quoted context omitted.
Damore was fired not because his science was flawed, but because he made himself essentially impossible to work with. Would you be "scared" if someone refuses to take a shower for months on end and a company decides to fire them?
What does it say about your industry, if even people with average, moderate positions are "impossible to work with"?
I propose a mental exercise: let's say that Damore had written a similar "manifesto" but instead of concluding that "women are not that interested in engineering" he concluded "black people are not that interested in engineering". Would you see a problem with that? Do you think that might create some friction with fellow engineers of color?