Well, that's a decent point. Frankly, I do agree with you, there is not much difference.
However, a friend of mine was about to return his PW just because he was so upset not being able to turn the lighting off completely. I've applied the hack on his demand and it worked fine, so I believe there is a small number of PW users that for various reasons consider it a really huge issue. It might not be my case, but still.
So I don't recommend going through all those steps including jailbreaking your device and setting up usbnet if you aren't absolutely sure this is exactly what you need. But if you do, I'm glad to help!