Badmouthing is hardly a Sister/female only thing. Everybody does it and for years, way before learning TTATT, it always amazed me how many JWs enjoy nasty gossiping or even slander. Made me wonder how that could be if it were "God's Organization" (and you can't blame everything on imperfection).
Speaking of Pioneers, some of the most annoying, most obnoxious people that I have met in the Org happened to be Pioneers. And they had their noses up so high they might have sniffed the dust in the Orion Nebula. They would often categorize people in Pioneers and non-Pioneers, the latter being beneath them. For many it's all about the glory they get.