I'm recovering from burnout after working at a big tech company for 10 years. I think this article tries to focus on how just giving people the right work will prevent burnout, but I think the causes are very complex and vary for different people. But it's important to catch it before it's bad. For me, I had difficult to please managers, or projects that went nowhere, or passion projects that were not invested in, or lack of strong non-work relationships, or even just looking at the company I worked at slowly lose all culture and turn into something that started to abuse customers and focus on profits.