To be fair, Joel isn’t really meant to be an intellectual man. He’s portrayed as too busy, too tired, and too jaded with life to really care about much outside of providing for his family. Maybe his brother’s service in the military rubbed off but I don’t see him as binging O’Reily after work
Also, don’t forget he sarcastically called the Fireflies (which is a lib vision of revolutionaries) Che Guevara wannabes