Society collapsing due to half the population disappearing, yes.

All women dying out in “days” without men, no. 😂

Even if in work like water treatment and electricity generation/distribution that are mostly men, there are still plenty of women. And huge swathes of the world live without these things anyway. It seems like you’re only thinking of cities becoming unlivable, or only thinking of a very narrow microcosm of women.

As someone who has known extremely competent and intelligent women all through my life, and also lived in really remote and rural places, I can say with absolute certainty that if men just blipped out of existence one day women would be just fine.

Yes, life wouldn’t continue as it had. There would be changes. Just like there would be changes for men if women all disappeared. But to suggest that women would just let rubbish and bodies pile up, and that they wouldn’t give any thought to or take action about food supply is delusional.