What does it matter if he can read a teleprompter?
An intelligent person would have most of the speech memorized, with some “cliff notes” to help them out.
Trumps early 2016 speeches were extemporaneous until aides convinced him to use their teleprompter ones to avoid——some——controversy.
I remember him saying to the crowds and smiling, you know I feel better just talking to you as I feel instead of reading to you. They cheered.