The author advocates for ending programs designed to get more females into technology and leadership positions because he views them as discrimination. His basis is precisely what you mentioned, that on average women are X. In his mind, the fact that men are more status oriented than women means that men will be disproportionately in leadership roles. That's "just the way it is" and we should accept it and create "separate but equal" opportunities (part time work in this case). It's not outright discrimination, but it's ignoring several other factors that cause women not to seek leadership positions. He's trying to use some very basic differences and ignoring a much broader picture.