Children need to learn CS concepts in order to use a computer about the same amount they need to learn mechanical engineering in order to ride on the school bus.
We learn to read and write, when we could just as well get all of our information read aloud to us by a few qualified Literary Scientists. I don't think it's a huge leap to expect that many adults would benefit from having some _computational_ literacy of a level beyond a basic introduction to Microsoft Office.
You're mixing up matters in your analogy. Riding a school bus is a passive task. Using a computer is an active task. You need a Mech. Eng. to design and build a bus. You don't need a Mech. Eng. to maintain a bus. Practically everyone should maintain their own personal computers.
I won't go into why CS concepts are important in school. My coffee has not yet reached my bloodstream.
Children need to learn CS concepts in order to use a computer about the same amount they need to learn mechanical engineering in order to ride on the school bus.