I could imagine a few professional uses which are less creepy. Students/teachers, comedians, legal/medical dictation.

I think the real power would be if it is wired up to an appropriately accurate text to speech engine and dumped to a searchable database. I have been blown away by how good Whisper is, but that requires too much technical expertise for the population. Having that workflow in a packaged product would be worth something not otherwise met by existing recorders.