It sounds intense for sure. Seizures aren't a usual symptom of burnout, nor that extent of cognitive impairment, but I certainly think that lots (maybe even the majority) of burnout in the tech industry and in other fields that require constant intellectual output is unrecoverable to some extent.
Even many of the people that found a way to code for fun (or even money) again will often say it's not the same, and the moment they hit a certain level of stress everything just shuts down.
I do think it is a form of post-trauma/post-stress in some ways. The brain associates the intellectual activity so strongly with the negatives that it just doesn't want to do that activity anymore.
US Healthcare system definitely sucks, though in this case the entire social safety net is kinda implicated.
But is burnout the same as severe PTSD? I guess I've never thought of it this way, but I can see how that might actually be the case - certainly I've burned out and it affected me for a long time. I just never have heard it this severe.
The U.S. healthcare system does indeed suck, at least from an outsiders perspective. I live in a country that doesn't have such an awful system. I feel very lucky!