I didn't even consider the possible nefariousness of it, but you have a point.
Although, you could also make the case that stores have signs (sometimes neon!) for sighted people, so this is just providing the closest equivalent experience to the blind. Yeah, it's not perfectly comparable, since sighted people can choose what they look at mostly, while none of us get to direct our hearing to only one source of sound.
Such a system would have to provide the user options as to what they want to hear, from the (-v) bare minimum safety warnings (curb, crosswalk, etc.) to (-vv) a more comprehensive description of the terrain and items around you, all the way up to (-vvv) a constant play-by-play chatter of everything it knows about your location, direction, and destination.
Although, you could also make the case that stores have signs (sometimes neon!) for sighted people, so this is just providing the closest equivalent experience to the blind. Yeah, it's not perfectly comparable, since sighted people can choose what they look at mostly, while none of us get to direct our hearing to only one source of sound.
Such a system would have to provide the user options as to what they want to hear, from the (-v) bare minimum safety warnings (curb, crosswalk, etc.) to (-vv) a more comprehensive description of the terrain and items around you, all the way up to (-vvv) a constant play-by-play chatter of everything it knows about your location, direction, and destination.