Sure, and I've no problem with that. The article in question, though, was suggesting that people are choosing wrong when they knowingly choose to be poorer but

Sure, and I've no problem with that. The article in question, though, was suggesting that people are choosing wrong when they knowingly choose to be poorer but happier. There was no failure to understand the problem implied -- it's just that they didn't choose the way the article author wanted them to, and he conveyed this by calling them irrational.