See this one, for example (near the end):
https://www.youtube.com/watch?v=4_RUgnC1lm8
Vonnegut concludes:
"We don't know enough in life to know what the good news is and the bad news is."
Cinderella and the rest are fantasy. Hamlet is the truth. Life is ambiguous and stories that tell us otherwise are lying to us.
This story graph thing has been quoted out of context so many times that people have completely forgotten the point Vonnegut was trying to make.