cursed-shining-armour answered your question: Is it bad that I don’t think I’ve ever heard of…

Understandable if you didn’t read science fiction or fantasy.

Not only did I read fantasy and sci-fi heavily while growing up, I’ve written and published fantasy novels and wrote my thesis over the place of modern fantasy, sci-fi and other genre fiction in the world of literary criticism.  I have never heard of Terry Pratchett.