"The CEO of EBay has people following me!" it sounds so ridiculous that I would immediately think the person telling me that has paranoid delusions but it was true.
Published (1961) before Kurt Cobain (and myself) was born.
On the other hand, my attempts to search for the word "paranoid" in the book on Amazon turn up nothing. And there is a semi-authoritative page that makes the same claim that you do, saying that the closest he found is a quote about a "persecution complex": https://quoteinvestigator.com/2016/07/09/paranoid/
Do you have more info?
If multiple sources are saying it is, they must be getting the idea from each other.