I understand there's a reason why accountants do things the way they do. But hacking is about looking at things differently. To use your analogy, one can definitely gain insight into planetary motion from a geocentric model even if it's not the best model for all purposes.
Generally speaking, "hacking" is about thinking things in a different way that is generally better or at least more useful in a certain situation. The author's explanation is strictly worse.
It's just another confident fool spouting off about a topic they don't understand. The article is 90% trash.