There is no scientific evidence to suggest that OP has "just been lucky". There is also no evidence to suggest that OP is a threat to him/herself or anyone else; they simply noted that they had previously been diagnosed with schizophrenia. Also, Bupropion is an anti-depressant, not an anti-psychotic. And Xanax is a strong Benzodiazepine and also not in any way an antipsychotic. So the conditions that OP was treating were basically depression and anxiety, which scientific evidence shows Cannabis has positive impact on both.
Now, this should provide all of the evidence needed to contradict your ridiculousness, but, in case it doesn't, YES, certain constituent compounds of Cannabis DO INDEED treat schizophrenia (and, again, your insinuation that anyone claimed it /did/ treat schizophrenia is a bit illogical for reasons above). See here for more info: https://www.projectcbd.org/schizophrenia
CBD is a potent anti-psychotic and antianxiety/anticonvulsant. Granted, it's present in small relative amounts to THC in most strains, but CBD supplements are available in all of the Medical states. I take them almost daily for anxiety and anti-inflammatory reasons.