It can be a problem.. especially if ai makes a mistake with quoted religious texts like pāḷi material and makes a mistake doing it.
Or if the user forgot the special characters (which ai does a nice job of doing), then it really should not fix that, because the quote is the quote . He might lead to a small tangent by misspelling a pāḷī word, but if it is corrected, then it does not justify the rant for his miscommunication due to a spelling mistake.
So, I think it should preserve the quote.. it does not feel right for me to upgrade someone’s quote.