Remeber 20yeears ago.
I'm a child of the 80s.
When i grew up then the era was filled with transistor radios in buses and it irritated me, then came the walkman which eventually made people stick it in their ears as so did I and journeys was once again silent.
Nowadays with the influx of mobile phones w mp3 players the nuisance is back.
It irritates me still with top40 songs being blasted here and there.
It's a brilliant idea as it'll save up batt life.
Having stereo speakers won't be any difference on any devices that small if you wanna compare to quality of sound especially if you're an audiophile.
No matter how 'good' a company boasts a mobile phone's speakers is, it will always be sub-par compared to the real deal speakers. In a way it is the new age transistor radio.
PS: Stereo makes no difference in less than a meter apart from each other.