If I want to do a voiceover of a ten minute video, I can type out the transcript and produce a flawless one-take audio track. This saves hours of time finding a quiet place to record, saying the lines, having a good mic, doing post-recording cleanup to remove coughs or passing airplane noise, multiple takes because I goofed a word up, etc.
I don’t know if this is the best use of the tech we’ve found yet, but it’s already a huge time saver.