I read the comment to say that a hobby might make him “truly happy” but because of the uncertainty of the future he’s working hard and getting some level of satisfaction from that. He’s maximizing for security not for happiness.
I don’t understand the relevance of that link with your point, although I mostly agree with your point I’m hoping you can provide more information on how your evidence is relevant.
The link is mostly about what happens when there is too little currency. Someone deciding to work 40 hours a week instead of 70 would, if anything, reduce the amount of currency in circulation because more wealthy people tend to have larger savings and a person working 70 hours a week is probably making more money than if they were working 40.
