There arent that many things you can do within half an hour at a charging station.
As someone who has used one, I disagree.
Tesla has tried to establish charging stations near shopping areas. There is generally lots to do. For example the last one I visited had multiple fast food places, an outlet mall and a casino. (This was in Primm, Nevada.)
Which means that you can top off your charge while at the grocery store, or work, or whatever.