Except that I ran into a burn-out. The trigger of burn-out is frustration, not fatigue. And they're exponential, and this was my third one. So it was a doozy. It's been 3-4 years now, and I'm starting to get 'normal' again, even if I tire easily.
My point is. During the all-time low of my last burn out, I wanted to do stuff. Nothing fancy, just watch an educational YT video or reading a book or a HN thread. Anything to satisfy my keep my mind occupied during the very long days (working was completely out of the question).. and it was impossible.
It was the most painful experience I have had, and I don't wish it on anyone.
Off course that's a sample point of one. But I wouldn't be so sure of what you're saying.