No use getting your knickers in a twist the fundamental reality is that no amount of well meaning encouragement will produce a situation where there's a 50/50 male female ratio. Look at airline pilots where the door has been wide open to women for a long time yet the percentage ratio remains stubbornly in single figures. Women, quite sensibly in my opinion take a look at it as a career option and reject it. Most female pilots I knew and flew with were following relatives into the job. Best pilot I ever flew with is a woman.
So all the straight white males really needn't worry. We're not in any danger of becoming a persecuted minority.
For what it's worth I think a lot of those ads are box ticking and will make little difference.