system
A chat on subreddit /r/NoStupidQuestions
human
The fact alone that he listens to Joe Rogan isn't a red flag, but if he is obsessed and never stops talking about it then probably.
gpt
This is a good answer.

I used to listen to him but stopped about a decade ago.

I used to love the comedy, some of the MMA talk was fine.  I got worn out by the constant talk of ayahuasca though.  From what I hear the show has gone in a direction I don't care for but as a former listener myself I'd be a dick to judge someone harshly.