I don't know the feminist take, but just to explain: the reason there is much much more polygyny than polyandry is basic reproduction mechanics. Women max out at ~13 kids, the most reproductively successful men have had thousands. So, a single well-resourced man can keep a bevy of wives at close to their reproductive limit no problem.

(Well, problems come when you do this as a society and create an age group of young men who have no shot at a wife because of 50/50 birth ratio. They get violent.)