Earlier quoted context omitted.
Unifying a voice in tutorial videos so that the difference in voice does not distract the learner. Auto non-toxic rephrasing of online chat in video games, let people hear their voice but paraphrase what they said in a manner that doesn't turn the platform into a cesspit. Cloning your own voice so that you can turn a script into audio without 50 takes and then having to remove a million Ums and errs.
Real time translation in the speakers own voice.
Mr Beast talked about translating his videos to other languages to get more reach. This can be done for people with limited budget or just in general so people can watch videos without needing subtitles.
I wouldn't be surprised if we saw this incorporated into YT in the near future.