I have no idea what this Op-Ed is trying to achieve/change.
When employment was more available to people who needed flexible schedules, more women worked (because they prefer flexible schedules). Now that flexible schedules are declining, less women work (because of the aforementioned preferences).
When employment was more available to people who needed flexible schedules, more women worked (because they prefer flexible schedules). Now that flexible schedules are declining, less women work (because of the aforementioned preferences).
There's no thesis here.