There have been some significant exceptions to your "always" comment.
Apart from Raelene Castle, lets not forget the work done by 3 female Board members of the ARU/RA in recent years:
Pip Marlow
Ann Sherry
Liz Broderick.
Josephine Sukkar is also worth mentioning as are many others. No doubt they did do some good work. As have many others; irrespective of gender.
I am sadly unaware of much of their work or the work of many of the board members; as I believe many would be. But then again, the board is a collective so we generally only see a collective outcome publicly. It may be in-part why they have been attacked publicly, unjustifiably at times, but then again so have most of the board have been for the continued failings - which is certainly justified.
I would be interested to hear some of the "significant exceptions" that have helped RA. Although I think its a moot point. Despite all the work, publicly the "old boys club" is still is alive, well and rules the roost. That is pretty clear.
It may depend on an individuals own experience, background, and perspective, but the continuing issues for the game, lack of real reform in combination with public perception is generally a good marker to make judgments, especially if you don't have access inside the tent.