Depends on the context, but generally it indicates a lack of critical thinking and a capacity to be easily swayed by sensational claims. Joe Rogan has no legitimacy as a journalist, and a checkered record when it comes to the veracity of what and who he presents on his show, which has shifted significantly rightward over the years, going from pot smoking and ancient aliens to diet supplements and anti-vaccine narratives. Generally, in the US, Joe Rogan fans are predominantly white, male, and right-wing with a libertarian bias.