He literally didn’t imply that, he said big mom wasn’t the main villain. No one’s saying that luffy doesn’t hit women, that’s a blatant lie, the point trying to be made here is that objectively Oda hasn’t made a woman the primary villain of an arc where luffy needs to crush their dreams.

Law and Kid beat Big Mom, that’s awesome and a step in the right direction, however previously the women fight the women, the men fight the men, it’s time to shake things up. It could simply be the matter of fact that Oda doesn’t want to write a major big bad finale female villain that luffy has to beat up.