Ha ha. You have not known burnout.
It has taken me a drastic break from work, isolation, depression, thousands of pounds in therapy, and 18 months to recover from work-related burn out. I did not write a single line of code for a year.
I am better now, maybe even better than I've ever been in my life, but I am a completely different person. There is a pre-burnout self, and a post-burnout one. (I don't code after work anymore. I do not enjoy cutting edge tech as much as I did just a couple years ago. I have become allergic to corporate life.)
Those that joke about burnout have no idea what they are talking about.