Not everyone has half the means you described (console players with no PC such as myself I know it's easy for pcmasterracers to forget we exist but I digress) and believe me when I say it's not as enjoyable to play it of your phone or even with speakers/headphones as it is when its coming from the same monitor. Some people would just like that option. But yeah I stated before it took them years to give us the option to turn off battle music so I agree this would probably be very difficult for them to add.