Work is usually underpaid for men AND women if there is a supply/demand issue or if the skills required to do said work is very low and easily accessible.

In the case of google's top level programmers and researchers, we are talking a very select subset of society which most men and women do not belong to. And again, even here the google employee was for diversity and for women being hired. He was just pointing out that an absolute 50-50 split in all fields, particularly  certain engineering subsections might not be achievable or realistic due to even minute bioloogical differences.

Women and men are diffierent biologically. How much that influences us I would love to read more rigorous, data supported articles about. Regardless, no one was saying men or women are or should be exlcuded from certain professions. Nor should anyone be forced into a career path. Your salary example is a different topic.