I appreciate the argument that burnout is more like depression, and should be approached with the same mindset. (i.e. simply taking time off of work might not cure it.)

But that's not really a valid counterpoint. One person's ability to have a 2-year Github streak is not evidence that burnout is just "in the mind," as he puts it. It just means that he's found a particularly sustainable balance. In fact, I'd argue that he's kind of an outlier. That 2-year streak would definitely not work for everyone.

What we commonly refer to as "burnout" can also surface with very physical symptoms. Blood pressure spikes, teeth grinding, weight loss or gain, physical exhaustion, even heart attacks. Maybe these symptoms are better attributed to stress or lack of exercise, but when they are a result of overwork and, more specifically, the compulsive need to work at a certain level despite all costs, that's burnout. It's not good and should not be taken lightly.