He publicly endorsed Sanders, then moved to Texas [0], accepted a big paycheck and checked out from discussions with a lot of his most liberal friends on podcast. I'm not sure anyone leaning democrat would be happy to move from Cali to a furiously red religious state that goes against some of his beliefs. But then again he has fuck you money so maybe that's the reason.

[0] https://nypost.com/2021/03/16/joe-rogan-sells-longtime-la-ho...