The narrow ankles have nothing to do with a person’s sex.
The ankles are narrow because the boot comes with a rear zipper. It allows a more form fitting appearance through the ankle.
I think Jeff called that measurement the “throat”. When you get measured for boots they do several measurements to ensure the boot is truly customized to the shape of your leg. But one measurement is the ankle/heel area - and it may be a bit larger so that your foot doesn’t get stuck 3/4 of the way inside the boot. It’s a real bi*** to get your foot out if you really get it wedged in there. Not that it’s happened to me…
In the end it’s really your personal preference. Some people like rear zippers because it’s easier to get on/off and the EMT’s don’t usually have to cut your boot off if you’re hurt.
I know nothing about the manufacturer so I can’t help you on that.