I think people are confusing ‘people who believe in conspiracies’ with ‘“ people who are delusional paranoid”
Many delusional paranoiacs believe in conspiracies. Many successful people say they don’t believe in conspiracies, but maybe that’s just their cover story. There probably are conspiracies, but if you think you know which conspiracy, that may well be what the real conspiracy wants you to think.
Twilight Zone episodes come to mind.
https://www.youtube.com/watch?v=oPOoEQ2vx7w&t=46s