I have to thank you @chris-chris92 for this insight! I have never heard of the John Lennom's death and the popularity of Catcher in the Rye in his death, but I am struck by how much certain commentators on the book have the same thoughts as I do. Thank you so much for this.

Holden was someone who couldn't tolerate hypocrisy, he detested it, even from his own father.

I will implore you to let go of sentiments and read the book, just to be your own judge and not influence your thinking by the statements of others.