Fair enough. I guess I'm just wary of articles like these because I think that nerds like me(and I'm assuming the author) have the tendency to put computers on this pedestal because we use them a lot and really really like them.
It's not the end of the world when someone confuses memory with storage or thinks that www should go in front of everything. In fact, these days I'd argue that it's not hugely important for "normal" people to know either of those things. I'd say that the most important part of this article is about learning to use Google, which is a hugely important skill at this point. Misconceptions about viruses are annoying and sometimes very problematic. And backups are important.
But I'd argue that just about everything else listed isn't hugely important. They're annoying misconceptions, sure. But that's about it. It's ok to be an unsophisticated user. Understanding that is what allows us to write good, usable software for "normal" people.