Hosting a website on a disposable vape

I don't understand the hardware setup. There is a usb-c port and they talk about usb serial devices which could be a usb to serial port, but what is after that? There are no pictures of it connected.

My best guess is that only the power pins of that usb port is connected. So they're going over a debug port for io.

Someone in a different forum said it was a usb to serial port then on a pc a network port was forwarded to the serial port, but it is very unclear in the article.