Many if not most "hard" science cultures (math, physics, etc.) have a strong undercurrent of competitive gamesmanship. In its worst form, it becomes about vanquishing your rivals more than it is truly about advancing the human condition. I believe this is a factor in driving many people out of the field, including many extremely talented women. The womanizing is consistent with this culture even if it doesn't always come out directly in lectures or papers.

Also, I have direct experience with this having spent time in some of the most prestigious academic institutions in the US. I can assure you that the culture I'm describing exists. As a postdoc, my supervisor was so insecure that he would go out of his way to undermine me publicly and he was one of the leading scientists in his field and in his 70s at the time. There were also good, generous people, but as the old saying goes a rotten apple can spoil the lot.