In my experience it's not just that serious books get a hearing on comedy shows. But serious books get a serious hearing as well as a funny one on comedy shows.
Read the news section of the newspaper and there is confusion and uncertainty...
The last person they expected to connect with a screenplay was the comedic...
I'm terrible at practical jokes. I do them too well so they're not funny. I end up saying 'Oh no I'm joking I'm joking.'