He was an idiot in the sense that you obviously should not write and distribute an essay at work on a sensitive topic, if you are not an “expert” and were not asked to do so. As far as anyone reasonable could tell the facts he cited are correct but his opinions and recommendations were obviously politically incorrect.
just a bit of a factual remark: he was asked to do so.
diversity and inclusion committee at google ask employees for feedback, the memo was a feedback saying "current policies do not work as expected, maybe offering more part time and family friendly jobs would allow both men and women that do want to spend time with their family to like working at google".
