Knowing how it affects the CNS, PNS, ANS and the other tissues in the body, it is no surprise that Cannabis has benign and in some ways near-miraculous effects on ANY nervous-system disorder, imbalance, or degeneration. The empirical effects which have been attested by those who've felt the benefits, and which have been seen by others close to them confirm what theory would have predicted. Even people who don't know the beneficiary of Cannabis' healing touch can be seen to treat the subject differently than usually would have been expected.
Unfortunately, this doesn't transform society into an improved version of what it is, so there are then pragmatic hurdles of adaptation to deal with, but at least now the healing person has more resources than ever before, many of which were not recognized as being in existence, but some of which are remembered as if an old friend lost in childhood.
But beware, the world is still the same wicked place that caused such disease as leads to such disorders, and it causes them in the body as well as in the social spheres. Autism is not "merely a disease of the person", but can and probably is a disease reflective of society's pervasive poisons of chemical and electromagnetic, and even psychospiritual varieties.
I think if we can see the holistic aspect of this relation so that the particular person whose conditions reflect in some ways the condition of the whole which engendered them, then we can't assume things will "just go smoothly" when your new faculties come online and people witness the True You. After all, the world just got done trying to kill that.
Expect the unexpected...
"Thus Spoke Zarathustra", by Nietzsche, comes to mind as relevant in such a context should such struggles manifest for someone who recovers from psychospiritual wounds generally, but especially if rapidly and amazingly.