I'm amazed it took a kickstarter to make that happen, it's hardly a difficult concept to realise. Kudos to them though, how long before the big boy manufacturers have their own equivalents?
There are already similar items out there. The problem is the dongles available now are niche products, and expensive.
There are some cameras that don't need a dongle as they have bluetooth built in. That means just connecting your devices after installing an app on the phone.
Gopro hero 5 has both bluetooth and wifi built in.