Why could John's final act of comitting suicide be considered positive and enlightened or one of weakness?

John, the savage’s death makes him a martyr.  At the end
of Chapter 18, when Lenina and Mr. Foster arrive by helicopter, John “struck at his
rebellious flesh, or at that plump incarnation of turpitude writhing in the heather at
his feet”(176).   This self-destructive exercise is the only way the Savage knows how to
take part in penance.   Unlike the society which surrounds him, John realizes he cannot
live in a sterile environment artificially controlled by science.  Everything from his
personal feelings for Lenina to his questions to understand his own existence is not
acceptable in the World State.  Because rich culture doesn’t exist, John is at a
complete loss.   John’s death symbolizes the death of not only a non-native but, also,
the spirit of an individual.   Our failed hero, represents a unique-minded individual as
opposed to the factory-made community entity.    Unfortunately, he doesn’t fit in either
the World State or The Reservation.