Comment by sealeck

I genuinely don't see the harm of these things – I often think the issue is that lots of measures improve safety at the margins (e.g. if someone is drunk and stumbling down the stairs this announcement might help them) rather than on average. That is: many safety features will produce limited tangible benefit to the average person most of the time, but they do reduce accidents which normally happen at the tail end of the distribution in more extreme circumstances.