The problem is that you're thinking of a supercharger station like a gas station. You get annoyed at the 5-10 minutes it takes to fill up your gas tank because you have to do it every week, because the gasoline fumes make them very unpleasant places to be, and because you almost invariably have to fill up at frustrating times (e.g. in the afternoon so you have gas to get to work the next day).

But a supercharger station isn't like a gas station. In an electric car, your routine charging is handled at home, overnight. The supercharger station is for emergencies and long trips. It's not a place you go to after a long day at work so you you can get back to work the next day, it's something you can work into your road trip, something you can combine with bathroom breaks and getting a cup of coffee.

The robotic drive throughs are a lot more expensive for a questionable amount of value-add. The vast majority of people spend most of their time in a usage mode (commuting to work), where in-home charging is sufficient. But they also go on the occasional long-drive. That's the use-case supercharger stations fill. After that, what's left? Who takes long car trips (200+ miles) on such a frequent basis that a 30 minute charge in the middle (that can be easily combined with a rest-stop break) is a major inconvenience?