If you set a destination, the car will route you to a supercharger and automatically precondition the the battery. If you choose not to select a destination (and thus have no supercharger on a route) and then stop at a supercharger, the car will accept a charge - but unless the conditions are ideal, it will charge slowly. And the computer will pop up a warning like “for fastest charging use online routing” which is basically reminding you to precondition the battery.
There's one major issue with that Video He never turn on the Heater, he had a Second Car with the Heater on . Who Stays in a Car in ❄️ with Heater Off for almost 2 hours 😏 If he had his family inside with the interior Heater on would the car even Preheat 😏