There were four others too. They published their views on a website (Quillette) that was immediately DDoSd off the internet - presumably by the sort of extremists who now control Google and who did not want anyone to see the evidence that Damore might have a point.
Damore is not an idiot. The people who are attacking him in these ways are though: it's pure anti-intellectualism.
And by the way, counting experts is not a valid way to decide things, it's just a heuristic.
Damore has 5 who point out that he isn't making the science up, but what actually matters is that there are hundreds of studies and papers that support his basic position. Dr Soh points that out. It's not just her opinion vs other people's opinions. It's the opinion of thousands of scientists who have published research that shows all sorts of preference differences between gender.