Seems like the obvious reason is because women are disproportionately more likely to take "email jobs" than jobs that require hard skills, and email jobs are easier to replace with AI (mostly because they aren't really providing much real value and probably could have been safely eliminated even without AI). You even see this trend in fields that are harder, with women who become doctors far more likely to become pediatricians, general practice family doctors, etc. as opposed to oncologists or surgeons. Or women who go into software dev being far more likely to work on frontend as opposed to, say, writing netcode or plumbing the depths of database performance.