I don't know either but this article may show us a side of Maher that may explain it. I for one have no interest in watching his show nor listening to anything he has to say about anything.
https://www.nickiswift.com/69658/shady-side-bill-maher/
https://www.nickiswift.com/69658/shady-side-bill-maher/
Truth fears no question. Anon