Okay, first of all ... don't just assume people who travel on a bike, don't have the right to wear expensive shoes. Even if they do that, they are not in any way alienating themselves from rest of the world. Sometimes, dressing matters more in an office environment. And sometimes, someone may like a particular thing in his/her dressing more than the other.
All i am saying is that this shifting style (one down, 4 up) isn't suitable for people like me. I used to use the shifter pedal just like that, as shown in above picture (reducing gears with the top of my toe), but i had to leave that habbit because it was ruining boots, and had to resort to traditional method (using the heel of my foot to reduce gears). Though i admit it, that i am also guilty of liking that style more (reducing gears from the top of my toes).
Thankfully, we also have the option to use the heel of your foot, to do that, on a YBR125. But it will take some time getting used to. OBviously it will be inconvenient when you can take out gears as shown in above picture (which is not only faster, but also gives you more control over your ride - because of your feet position).