Some people are just naturally computer savvy. My class and I were taught on how to use command prompt, but only few of us could get it. We just wanted to play Command and Conquer and DOTA, and leave the tweaking to the nerds.
Nah, I really don't think anyone is naturally computer savvy. Computers are literally the furthest thing from nature in existence. Some children are given the freedom and/or encouragement to explore computers, and some aren't. Giving a child an iPhone or an iPad as their first computer is the opposite of this, btw.
Edit: For the record, nobody I know who uses a terminal on a daily basis used it in class for the first time.