These are, indeed, good questions Iggy, and I don't think we fully know the answers. One possible way of looking at it is that 1) yes, we need neuro-rehabilitation, and any wholesome experience is good for growing new neural networks, but 2) we have a dysregulated autonomic nervous system and it can't "digest" certain experiences.
For example, too much exercise too early on doesn't help most people (although there may have been a couple of exceptions), because it just triggers autonomic chaos and a stress response.
You see this with chronic fatigue syndrome, too -- they can't just push themselves; it literally causes measurable exhaustion symptoms that take a long time to clear.
On the other hand, there are people with other types of neurological damage who seem to respond well to stringent physical therapies.
So, the answer may be a balanced, moderate approach to neuro-rehabilitation, when there is dysautonomia present.
