I had to use public chargers for a while when my house was being worked on and it was pretty miserable. They were frequently broken, and lines were common.

The real problem with public charger lines is that there is no social protocol for them yet. At a gas station, it is fine to pull up behind a car currently fueling to indicate that you would like to fuel at the pump next. Charging stations, however, are not built with pull-through spots. There's no place to form a queue at all, so people park nearby, circle, and sometimes snipe a spot when it isn't their turn (because who can tell whose turn it is?).