So the tablet has a hardware problem, so their solution is to give you a bulky usb dongle to fix this?
The tablet is encased in metal and it ruins the signal. There's plenty of mods which prove that the metal case is the cause of the problem and creating a GPS "window" solves it.
The problem is whoop, the GPS isn't the selling point of the device, much like if your car has trouble with the window winder and they replace it with an updated window winder. You can complain that you liked the colour which matched your interior and the one they gave you was black but really it's a solution.
So your anology sucks.
Also it never claims it can DO gps. They removed that from the spec sheets before the device was on sale. It's just that there's an implied expectation so they've kindly sent one free to anyone who wants one.
It's like your car didn't come with aircon, but they never said it would. All the aircon shit is hooked up, but to funnel it in they offered you a hose instead of airvents.
Edit: My source comes from http://www.tomshardware.com/reviews/transformer-prime-tf201-tablet-review,3175-4.html
Edit2: as an aside