The memo was as polite scientificly-backed and clearly written as it was reasonably possible without turning it into an academic publication. The only mistake he made (while at Google; I was really surprised by the on-line crowd that he found itself with after being ejected from his workplace) was not realizing that he's not dealing with a rational audience, in Google or elsewhere.
Mike Cernovich is the same way. He's looking to push a narrative to further his own agenda. An agenda and narrative I find gross and offensive. So he thinks Damore fits into that narrative. That is a not so subtle hint to me that Damore is saying something gross and offensive.
It's not the best way of judging things for sure but I don't think it served me poorly here.
What's truly sad about this is that he is the first I've heard of to propose actually fair measures we could take to promote gender diversity in IT, such as using more socially involved methods such as pair programming. Instead we get positive discrimination.
This depiction by tech crunch is an insult to reporting, if you read/listen to the primary source, there is no hate, no sexism, no racism, he just saw unfair stuff and spoke out about it.