To think Revolting Rhymes is not suitable for 5 years olds?

[fosterdream]

I quote;

'Poor Cindy's heart was torn to shreds.
My Prince! She thought. He chops off heads!
How could I marry anyone
Who does that sort of thing for fun?
The Prince cried, "Who's this dirty slut?
Off with her nut! Off with her nut!'
― Roald Dahl, Revolting Rhymes

and

'Oh where, oh where had Snow White gone?
She'd found it easy, being pretty
To hitch a ride into the city.'
― Roald Dahl, Revolting Rhymes

I bought it for my nephew for Christmas and had a quick read and was shocked when poor Cinderella was called a slut and told her head would be chopped off!

I called up the book people and have a refund but I'm still very shocked it was for ages 5+ is this unreasonable?

I love the book and so does my six and three year old. I do censor it when I read it to them though.