From the perspective of a born-in female JW I intensely disliked the patriarchal system but I thought it was imperfect men misinterpreting God's directions. I was sure God never meant for us to be patronised and sidelined. I thought it would all be sorted out in the new system.
Also don't forget that many women support the elder and MS hierarchy because that's the only way they get any respect, from being the wife of one of these guys. Not because they think it's brilliantly designed.
As for women converts I can only guess that many women join because they want a paradise future for their children. They have no concept of the extent of the JW patriarchal system until they are too involved to get out. They don't run to it with open arms. They see it as a flawed but necessary system to get the preaching done and the great crowd gathered in. In the new system everything will be put right when Jesus takes over.
Just because women accept flawed systems and try and work with them it doesn't mean they love the system, it means they want to survive.