Yup, those people are losers. Each system has its ups and downs and there's almost zero reasons to blindly support one over the other.
The 360 charger kit comes with a rechargeable battery, and is cheap and replaceable. It also has two slots so you can always have a battery charged and ready, swap in and out and no cords. Its fucking sweet and I wish my PS3 controller had a similar setup. If you look at my theater pics in the Parking Lot, you'll notice how far away the components are from the chairs. Total PITA to have a USB cable that barely stays snug draped across the room. The Wifi dongle was $50 bucks, so ya that sucks ass but it kept initial costs down, and you still had the option of wired (or using your own wifi adapter). Still kind of sucks though, seeing as how the wii has built-in wifi.