They wrote their own speech. I think they did a great job.
They wrote it and it was vetted by Karen Hughes and their mother.
Maybe you would feel differently about it if you read the text.
It was really pretty clever. Most of it was a little play on how college grads think they have the answer to everything only to find out that there is a chief of staff, or foreign policy expert etc that really does have all the answers.
Read the text. You might see it differently. They are practiced with delivery to be sure but it was a cheerful upbeat speech.
I read the text, it stank. Where did you ge the info they wrote it thermselvs? Haven't seen or read THAT anywhere, and have seen precisely the opposite.