I don't think you truly believe that though. Most people who hack daily have at least a basic working model of the computer. There's a compiler parsing, generating code, there's possibly a VM executing bytecode, an operating system managing memory, scheduling, network and other services, below that there's a CPU executing some representation of assembly code, it's in turn composed of some sort of a logic array, etc. etc. I'm not saying you know the inner workings of everything.

It's more along the lines of, we teach physics with the aim that people finishing high school should have a vague notion about at least newtonian physics, some electromagnetism and the scientific model. For computers, we teach how to open Word, check your e-mail etc. Stuff kids know. What they don't know is how this all ticks, and I think there is certainly value in helping kids construct a vague mental model of it all, and how to apply certain parts of it to a screen they'll probably interact with 4-16 hours per day for the rest of their lives.