[Antoninus]

But if it’s not part of Cultural Marxism, then why have all the Cultural Marxists always pushed this book so hard?

It's meant to examplify how pathetic and dysfunctional American society was/is. Also, to demoralize the youth among those the reds viewed as their enemies.

[Borges]

Holden is not a reliable narrator. He’s a kid having a nervous breakdown. Salinger clearly dislikes him. Read Salinger’s other fiction