I mean it. It is on you when your duos, friends or even randoms are rude to women. If you speak out against it you not only are showing them it isn't okay, but showing the girl getting harassed in your lobby that she at least has someone on her side. Sure we can "just mute" but isn't the game better when your entire team has good synergy? Don't y'all WANT to win?

If you are a witness and choose not to intervene you are allowing the behavior to continue. Break the cycle.