If you’re a teenager then yes. Otherwise, it’s an ad persona towards an expected legitimate complaint: „hey, maybe a lot of work actually isn’t CPU-bound?” Seriously, if you can’t discern between solution for CPU-bound and IO-bound problems, you should consider a different career.

I think the author didn't spell out the issue with that useless bit of trivia because the issue is obvious. Whether the implementation of the function is inefficient or not is immaterial to the argument. Most things arn't CPU bound, some things are. So the complaint stands.

Calling me a teenager, and then accusing the article of ad hominem six words later. Superb.