That might just be the way things will be for a city charger (slow charging because the battery didn’t have long enough to warm up) unless someone is in the middle of a road trip or stopping for a charge at the end of one. The 35 minutes it took for me to drive the 15 miles, with preconditioning starting as I pulled out of my driveway, wasn’t enough to get much speed of charge.
Yep - that’s how it goes with local supercharging. In addition to being slow, it takes a lot of additional energy to warm it up to supercharger temperature compared to warming it up for AC (level 1 or 2) charging. It can be several additional kWh, which can add up to a buck or two every time you charge.
If you can charge at home or at work, that’s always the best option. If superchargers are your only option, plan your trips accordingly and use the time productively; it’s going to take longer than a typical road trip charging session, especially in cool weather.