The fact that you still don't get what our issue with a simple, casual sexist remark is shows that either you don't want to understand, or you're simply incapable of doing so. We've explained it numerous times, yet you still don't get it. You're still going on about 'huge world ending issue.' I'm pretty tired of trying to engage you in intellectual debates when you're clearly way out of your depth in anything that requires a bit more thought than a post in TK.
I'm not even a female, yet I hold to feminist ideals. As a homosexual, I also strongly hold to homosexual ideals. Maybe it's the fact that, as a homosexual, I have experience with being part of a group that has been oppressed and marginalized for centuries that leads me to sympathize so strongly with feminists. Regardless, I will call someone out on a casually sexist remark for the same reason I will call someone out on a casual homophobic remark.
More often than not, it's not so much what is said as it is the mindset that powered what is said.