You even highlight the word _exactly_ but that is not what he said. That quote says they don't have equal representation and there maybe biological differences to blame.

The main reason for confusion seems to be the quote assumes women might not be as attracted by tech work as men are. That assumption changes the meaning because in your interpretation "Women want to be in tech as much as men and D'Amore is saying they just don't have the genes for it" vs "Women want to be in tech less than men to start with and besides bigotry, hate and marginalization, cultural biases, there could be a biological explanation for it".

I know we all think tech is awesome, we are getting paid to do what we love, etc. But it turns out many people, and maybe women more than men, don't find sitting in a cubicle all day inverting binary trees appealing. I don't think biology is the main driver here [+] but D'Amore does. He might be wrong, but I don't see why it had to become this controversial topic and lead to firing and lawsuits. They could have just said "here is why science doesn't support your view, thanks for starting the discussion, but you're wrong" and leave it at that.

[+] I don't support his view, I'd personally blame culture for women not even wanting to be in tech. Having lived in Eastern Europe where there is less "stigma" against girls liking math and computer science. It's not a cause, or a talking point at least, it's just a profession like accountant or doctor.