Inequality is highly destabilizing - which is one of the reasons that it spread in the ancient past, so yeah, it might well re-emerge. Unless we get to a Star Trek kind of civilization. 😉 Instead of looking at it as feminist, why don't you look at it that way? Because that's what I'm advocating for.

As far as location, I don't think so. Kurgans seem to be more of the Baltic/Black Sea area

Cultures that Gimbutas considered as part of the "Kurgan culture":

Bug–Dniester (6th millennium)

Samara (5th millennium)

Khvalynsk (5th millennium)

Dnieper–Donets (5th to 4th millennia)

Sredny Stog (mid-5th to mid-4th millennia)

Maikop–Deriivka (mid-4th to mid-3rd millennia)

Yamnaya (Pit Grave): This is itself a varied cultural horizon, spanning the entire Pontic–Caspian steppe from the mid-4th to the 3rd millennium.

Usatovo culture (late 4th millennium)