Yeah, the burnout isn't usually coming from the coding (though it may be in some cases), it's from all the pointless bullshit that gets in the way of said coding. In every job I've gotten burnout from I've wanted to keep coding, and I would be happier if I could actually get to do so. But then either the business side got in the way, a dependency on another team got in the way, etc. So the frustrations just mounted up and up, and the feeling of hopelessness set in.