What happens when this negatively affects user experience?   How? How would a natural sounding, natural acting female voice for a virtual assistant possibly negatively affect user experience? Real world usage, once you're past the novelty factor, what are you using the voice commands for? Text/call person, how's traffic on my way home, remind me to steal a few AAs from work tomorrow, where is the nearest Starbucks, shuffle music, what will the  32f6   weather be like today, set a timer for 15 minutes... damn, I'm using Cortana a lot. Anyway... how would Cortana not reacting to obscenities affect anyone's user experience here?