Bluetooth does not equal internet. Bluetooth is a technology that allows devices in close proximity to communicate and exchange information. It has nothing to do with the internet. You could use Bluetooth at the bottom of a coal mine if you wanted to do so. Good luck doing that with wifi.
Both Bluetooth and wifi are very useful technologies. For a camera, I would prefer wifi. With wifi, you could easily transfer to your computer or directly upload from the camera. With Bluetooth, all you could do was transfer the file to another Bluetooth enabled device in close proximity. Most computers aren't Bluetooth enabled.
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz