The average person learns how to drive a car, which is akin to operating it. The average person does not know how to muck about in the engine of their car, and should not, because if they do the wrong thing they could break it. For that matter, I wouldn’t even recommend someone OPERATES the car without training.

The terminal is considered for advanced users for the same reason. Learning to copy/paste into the terminal without understanding how to use it could mean I say "oh yeah the fix for that issue is doing rm -rf / --no-preserve-root.