People with high functioning autism could use the record to handle social confusion. Often they’ll have difficulty in social situations without understanding what went wrong, so their memory of the encounter will be incomplete/unreliable. Having an objective record could let a trusted third party help them learn/understand what happened.

As one of those people, I have to be clear: this is not how things would shake out. The vast majority of the time, the misunderstanding comes from tone, not from the words used. Providing a transcript showing that one’s words are inoffensive has done little to improve the situations where I’ve been able to provide them - NTs often double-down that their emotional interpretation of your tone still matters more than the specific words you chose.