No, Damore's memo didn't say discrimination isn't a problem.
Oh really? Then why all the biological argument to explain disparities in engineering? What would be the point, if anyway he agreed that women and black people are discriminated against, and that it is a problem?
He was trying to show that the anti-discrimination training at Google was unnecessary, and to support this assertion, he claimed that the differences where due to biological differences rather than discrimination.
The whole biological argument that made people scream so much is irrelevant unless it implies that discrimination is not a problem.