Salvatore Mineo, Jr. (January 10, 1939February 12, 1976), was an American film and theatre actor, known for his performance as John "Plato" Crawford opposite James Dean in the film "Rebel Without a Cause" (1955). He was twice nominated for the Academy Award for Best Supporting Actor, for his roles in "Rebel Without a Cause" and "Exodus" (1960).
Salvatore Mineo Jr.died at the age of 37 after filming Rebel Without a Cause in 1960
he did die after filming Rebel without a cause in 1960, but his actual death was in 1976, which was quite a bit after filming, so the statement is neither definitely correct nor definitely incorrect