Is there any positive use case for this technology? YC, care to comment?
Anything written can be listened to with this tech. Any news article, any short story, a draft of a piece of writing you're working on. There is too much text for human beings to read it all.
Translating from one medium to another is extremely useful.
It is faster to read than to listen to something
TTS with natural inflection opens up a world of narration to stories with audiences too small for human narration.