Thank you. I also agree with the points you bring up, except one: "I think it is extremely unlikely that anyone would ever seriously make these suggestions because both males and white people are already in the majority."
Actually, males are in the minority worldwide, as are "white people" however defined. I worked for several years in a field that is heavily dominated by women myself, and I can just imagine the responses I would have gotten had a I tried to start an initiative to make our conferences more testosterone friendly.
Ultimately I think we should get away from analysing these final outcomes and looking for problems there - look instead at individual liberty. If people are being actively kept out of a field because of their gender, that is wrong, but if there are no barriers like that and one group is just less interested than the other, then that outcome is perfect.