Few people distinguish between a speech and the reading of text.
Few people can write text that reads well in public.
Even fewer can read it. In which case, don't speak. I happen to agree with Jenkins. But I have also heard a lot of duds, and it seems to me that reading a script is far more likely to produce a dud than using notes. Otherwise, a well-prepared set of notes, with the emphasis on content rather than verbiage, will generally produce better results.