“usually only about 20% had ever cleaned a toilet.”
My daughter wanted to earn some money when she was ten, so I told her that I would give her $5 a week to clean the kitchen and bathroom! Now that she is 14, she is starting to realize that she is not getting paid much for her labors. However, she still does it because she wants the money! 
I agree that this is a life skill that one can learn in one minute. I never did any chores growing up. Amazingly, I have managed to learn how to keep a clean and orderly house. All things in their due course.
I hate ironing. If my kids want ironed clothes, they iron the clothes themselves. My son returned with a suitcase full of clean but VERY wrinkled clothes.