Whoever wrote "The Fox and the Hound" is the biggest Disney villain in my opinion. That is my least favorite Disney movie ever and really near the bottom of all the movies I've ever seen.
If you are talking about the sequel, then I would have to agree (except for the songs, those are great). "The Fox and The Hound" was written by Daniel P. Mannix and it's one heck of a book... turned into a pretty sad movie by the folks at Disney.
The book is impossible to find and the movie has gained some recognition because of its amazing technical quality and good plot. It's not a movie for everyone, that's for sure, but you should totally give it another try... it wasn't of my taste the first time neither.