Well, the page does say "However it has been suggested that about 5–15% of users fail to make a complete recovery from the psychosis in the long term."
And there are other statements suggesting that people that have suffered from acute psychosis are prone to relapses (if a chronic user has more problems than a dabbler, that at least suggests accumulated damage).
And there are other statements suggesting that people that have suffered from acute psychosis are prone to relapses (if a chronic user has more problems than a dabbler, that at least suggests accumulated damage).