Explain Fitzgerald's purpose of using the word "holocaust" in the last sentence of chapter 8?The Great Gatsby by F. Scott Fitzgerald

The word holocaust is of Greek origin
and means sacrifice by fire. Certainly, Jay Gatsby becomes the
sacrificial victim of his amoral friends' actions:

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The touch of a cluster of leaves revolved it [the
mattress on which Jay lies] slowly, tracing, like the leg of a compass, a thin red
circle in the water.

Then,
Mr. Wilson's body is discovered as he has shot himself, also a sacrificial victim to the
fire of his wife's passions, as well as one victimized by his environment of decay and
desolation.  And, both Jay Gatsby and Mr. Wilson are the scapegoats--just as the Jews of
the Holocaust were scapegoats for the ills of Germany--for the decadent Buchanans who
have refused to take the blame in the death of Myrtle Wilson as Jay is blamed for
Myrtle's death. In addition, while Wilson is the murderer of Gatsby, he is also the
Buchanan's scapegoat because eliminates a person who could have testified against
them.