I sorta kinda understand that, but where I live (southern europe) I always had different experiences. As soon as any talk/workshop/whatever is 'segregated', there is a lot more gender issues talked than when it is mixed. Over the top example, but as as soon as men (even in professional settings) gather only as men, sex related bits show up in talks/etc, and when it is a group of women (according to my wife) it usually degenerates into a feelings kinda talk over objective talks. When it is mixed, I never felt there were objectifying of women or female speakers focused to much on 'womens topics'
(and sorry if I seem insensitive, and I'm sure there are women (and men, and gays, and blacks, etc) that have been victimized, but for the last few years, I've found that the 'segregated' events end up being more and vile than the mixed ones)