I mean, the average wedding speech of any type is of course _quite bad_ (most people not being accomplished public speakers), but they're at least generally bad in a fairly varied, human way. The mind-numbing same-y badness of all ChatGPT prose would not be an improvement.

The whole point of the best man/maid of honor speech is to tell some moderately embarrassing story from ages past.

Without that, who would even bother?

Exactly. It isn’t a store opening speech or some other super formal part of the wedding. Best man/maid of honor speeches are usually supposed to be more of a storytelling piece (of variable funniness) that ends on some heartwarming and/or cute conclusion.

I wouldn’t blame people for using chatGPT to generate more formal/canned sorts of speeches, but the man/maid of honor speech is imo a terrible application for that.