Self reported happiness is very unreliable. Maybe he is maybe he isn't.
Grow up in a very dysfunctional family and just the absence of pain produces it's own happiness. I know from experience.
Very low sex drive also reduces the need for status. Blessed with good dopamine production and without any effort life is quite happiness inducing.
Put in the effort to remove suffering in oneself and live in beingness and often the default is a kind of contentment often know as happiness.