It's not so much there aren't any drivers but device support either exists in the ever growing huge bloated mess of kernel (including the one that this article is about) and userland packages. Or it doesn't.
There is NO mechanism for plugging something in the the machine going to find drivers for it based on the IDs (USB or PCI) or the device. Like MS Windows does. Nor is there anything in the pipeline that does that but I will accept correction.