As for the memo itself, I think it's a bit of a Rorschach blot: people are seeing what they want to see in it, largely because the writing is so poor that the author fails completely to get his own points across in a coherent manner. The conversation about "women in tech" is severely hamstrung by folks conflating issues of sexual harassment with the hiring pipeline. These are two very different problems requiring two…
The writing's not ideal, but truly if opponents can read even this and frame it as "women have inferior genes," then this is a discussion that can't be had. There is no way to make the case that sexism and oppression are not the only causes for inequal representations in tech that will not be an "anti-diversity" position that makes some coworkers uncomfortable.