That's a nonsense claim. I've yet to come across a peripheral that doesn't work with OS X out of the box.
You ever tried putting a different graphics card or network/wifi card in your mac? We're not talking USB drivers here..
Saying it has "no driver issues" is a nonsense claim. What, did they include all possible drivers? Of course not. Instead, they've created a consumption pattern where their customers only buy their products.
If you only use Apple hardware, sure. Otherwise, it has the same driver issues as any OS.