It seems problematic with pilots who get into arguments with others, based on those other people's gender, or in other cases maybe skin color or whatever. And who in that way make themselves upset, so they cannot concentrate on flying! Sexist pilots are an air safety risk?

It's interesting in another way too: I think the crazy thing he said, suggests that he is a bit dumb. (Both for having such thoughts, and for sharing them with others, whilst being recorded.) Which is of relevance, I think. And might indicate that there was a recruitment problem as well. (The airline company hires dumb and sexist pilots?)