It's a tragedy that schools don't teach finance
But the bigger tragedy is that schools don't teach critical thinking, don't teach basic reasoning, they don't even teach accounting.
On an individual level, it's very easy to laugh at people who confidently say idiocies because they can't grasp basic concepts like profit.
On a societal level, the fact people like these exist, strictly because their education was anti-education, is disaster for our long-term survival.