Perhaps the feminists in question believe that their voices are more likely to lead to a change in the stance of the US and the behavior of Israel than a change in the past behavior of Hamas. What Hamas _did_ was wrong. What Israel is _doing_ is wrong, and it’s probably only going to stop in the face of real external pressure from democracies, which have historically shown an interest in protests. I can’t speak for these feminists. But you certainly can’t either.
Hamas bad behavior didn’t stop on oct 7. It isn’t « past » behavior. It’s an ongoing conflict, with hamas having hostages and firing rockets every day. They are however the initiator of this war.