I think, if you go as a guest, girls are generally very cordial. Depends on what context you are stating. Definitely there are exceptions like Arundathi Roy in every place. Anyway Arundathi has had problems in her personal life from childhood. Kerala has it's own share of issues.
From my understanding, If you look, woman in Kerala are more qualified than a man in many cases. They are hard working. Many woman have double degree. And it's difficult for such woman to find a suitable man for alliance. So they compromise. And there are many couples where this issue triggers tensions in family lives. And mind you, most educated girls would have taken some dancing, singing, music coaching or extra curricular activities.
So I wont deny some women become tough & may appear proud like the lady below in the video. You should also know in Kerala, there are many men who have drinking problems & at times they are nuisance when they are drunk. So many woman have a poker face due to the pressure of the home & situations. But I would definitely say, woman are really humble in general, over Kerala men certainly. I am not defending you, that's my view.
In the above video this lady may appear little proud. But it's how you look at the person & in what context they are tough.
There can be some critics who can look at this above lady as an unthankful woman. But if you look at the intent of the person, you understand they are normal & fair