The reason a human reviewer needs that information is to troubleshoot the response.

1. Customer makes a request that requires location — “Alexa, what’s the weather?”

2. Alexa gets the response wrong — “A turkey is a flightless bird.”

3. You flag that as incorrect in the application.

4. An Amazon employee reviews that flagged response, and needs to figure out how Alexa misinterpreted — did she mishear you? ...is your location data malformed, so that interpretation was discarded? etc.

I don’t see how Amazon employees can troubleshoot the Alexa application without both reviewing the audio files and the contextual information provided.

Disclaimer: at one point, I reviewed security for Alexa teams. I no longer work there, my opinions are my own, etc.