I actually feel that the situation is justified to a degree.
A judge by their nature should be held to a higher standard.
As such They should not be allowed to have an additional job because that creates a conflict of interest. Similarly the reasons the provided can cause significant legal hurdles. Any future defendants found guilty by that judge will basically be given free room to appeal based on the notion that the judge has a recorded bias regardless of the facts behind the conviction.
On the other hand, I am aware that no judge can truly not be biased, and that they should all strive to remain as professional and neutral as possible. As such a judge who is also a comedian should be able to put his feelings aside in the course of his judicial activities as much as any other judge does with their own biases.