1) The term was probably created by black women, therefore it can't be sexist;

2) Everyone knows it isn't aimed at every white women-just a small arrogant subset that makes trouble for people with less power in life than them and always does so for no valid reason;

It's petty to make an issue of the term when black people are living in constant danger from racist police violence. SInce, as a privileged white person, you will never experience anything close to the constant fear black people live in in this society, you are not morally entitled to make an issue of this phrase.