That's really not okay to say and honestly i'd be questioning him about it.
Also just because someone eats healthy doesn't automatically mean they'll live longer. In most cases yes but not always.
My great grandmother smoked since she was 14, drank alot of alcohol, ate about two-three bars of chocolate every day (200g bars) , never ate a green vegetable a day in her life, would happily go up for seconds at the buffet and every weekend would take me and my sister to Mcdonalds without fail.
She died at the grand old age of 109 and she only died because she was in a car accident, she easily had another couple of years in her.