But get this...He warned that the expanding boundary of psychiatry is causing a diagnostic inflation that is swallowing up normality and that the over-treatment of the "worried well" is distracting attention from the core mission of treating the more severely ill. In 2013, Frances said that "psychiatric diagnosis still relies exclusively on fallible subjective judgments rather than objective biological tests".
I guess when it comes to Trump, he ignores his own beliefs.
I heard several of his lectures on this.
His motivation was to delay the DSM-5 as it stopped his royalties on DSM-4 sales.