I can assure you, from personal experience, that does not apply to all women.
Every rule has the exception that proves it.
Its safe to say that 50% of the married women between the ages of 18 and 60 could have sex with their partners any time they want to. That never applies to men.
IMO women create fantasy worlds where they would be a sexual goddess, "if only...", and that becomes the major impediment to actually having sex.