It was mentioned later in that thread, but the Kona EV also lets you control the AC remotely via its mobile app without leaving the keys in the car. I don't know if it'll run indefinitely, though; my old Chevy Volt would turn off remotely started climate control after 15 minutes or so, and I haven't tried in the Kona yet.
That said, even if it is time-limited, 15 minutes is usually enough to cool down the car without leaving the AC on all day.
Any time limit defeats the point. An electric car isn't just a car without gas, it's a climate-controlled room you can put anywhere.
As global temperatures rise, there are places becoming increasingly uncomfortable to live in. There may be cases where it's cheaper to wait out the hottest days in your car, instead of retrofitting a cooling system onto a building.
That said, even if it is time-limited, 15 minutes is usually enough to cool down the car without leaving the AC on all day.