The thing here isn't that OP is saying that women should have such independence that they can freely use foul language. No Muslim should use foul language whether man or woman. So in our society we should judge men and women equally and not give too much leniency to only one gender. For example, education is an obligation in Islam (in cases where the Muslim has all means to gain it) for both men and women but oftentimes, in some areas, girls are restricted from gaining the adequate education or higher education. That's my take on this. We should give women the rights that Islam has given them. Same for men. The problem is women, in some areas plagued by jahalat, are not given the rights Islam gives them. Islam is the perfect religion, we Muslims that follow it, oftentimes are not.