The country in question does not claim to have "wiped out schizophrenia". I believe the DSM requires six months of continuous symptoms in order for that diagnosis to be given. And in this country, at the first hint of psychosis, there is intensive help - to the point that nobody gets to "six months of continuous symptoms". Individuals may fight psychotic experiences all of their life - but do not qualify for a "schizophrenia" diagnosis.In the age of information if schizophrenia were being wiped out anywhere, more than just this one doctor would know. The world would know.
It isn't a popular approach because it is NOT cheap. And it is not a cure. But surely it results in a higher quality of life for both the individual and those around them.