I would say this is more like buying a family sedan and saying that you don't want the engine they provide. Essentailly your saying, I have my own engine I'm going to use, just ship me the shell with everything else.
The only part I agree with is the part in this specific contract where it say's if you want it, they will refund you the value. Other than that people need to stop complaning they can't get a large manufacturer's PC without paying for windows. The BUYER has the choice whether they want to buy a product or not, just as the seller has the right to decide whether they want to sell you a computer with an OS or not. Don't complain when you go to Ford demanding a car without an engine and expecting them to bow down to your needs, there's always kit cars.