Most of these skills are no longer needed by people in the US, or are made impossible to do by technology. Ever tried to sharpen a serrated knife? Not really possible, either by steel or stone (because of those serrations), and most low-end knives are sold serrated to make it easier to cut things. When the sharpness is gone, the knife becomes useless because it cannot be sharpened by most methods.
New cars cannot be fixed like old cars. New cars have computers in them. If the computer goes out, the car is dead (I know, it happened to me) and must be fixed by a specialized mechanic.
I can cook and clean, but with a lot of clothes, even if you mend it, the item no longer looks as good (especially if the mend is in a noticeable place. I can sew, but I never do. I can roast meat, grill meat, bake meat, wash and clean and cook vegetables, but I have never had space for a garden, so I can't do that. Never hunted, either, so I am clueless about how to clean and butcher game.