AI

In the early days of AI audiences were not inclined to be suspicious that a speaker might have used it, but now that AI - and ChatGPT in particular - is so widespread I'm sure audiences usually have it in mind when they start listening to a speech.  This is probably particularly true of wedding speeches, when many of those listening to the speech will know the speaker personally and if he/she has used ChatGPT they are very likely to suspect it.  However good AI is, and it is very impressive, the fact remains that a computer can't produce a really convincing and authentic personal speech.