Go count all the exclamation points in The Witches. We dare you. Give up? So did we. There is so much awe and amazement in this book that, in certain chapters, nearly every sentence ends in an exclamation point. The narrator is enthralled by his Grandmamma's stories; the witches are amazed at the amazing-ness that is The Grand High Witch; the narrator is in awe of the beautiful hotel; Grandmamma can't believe how brave her grandson is. And the list goes on. (!)
Reading about all this awe and amazement makes us, as readers, feel even more awe-struck and amazed. If these people, who live in a world where witches exist, are in shock, our reactions are even more extreme. We don't even know what a blabbersnitch is, for crying out loud. Roald Dahl's writing style adds to the sense of awe through its flashy vocabulary and his unbelieving tone. Check out Shmoop's sections on "Writing Style" and "Tone" for more on this.
Despite all the exclamation points, the witches aren't that amazing. They're defeated by a seven-year-old mouse, after all.
Roald Dahl needs to learn a lesson in subtlety. All the amazement and awe just seems over the top.