Even if the camera does not itself transmit RF as a function, it's theoretically possible that it could be emitting RF interference, but it would really be a fluke if it was.

Look at all the interference emitted by a modern computer or any other electronic device, esp. if you take the metal case off; if you got a dud camera ie. let's say the switching power supply needed a metal shield in order to get a pass from the FCC, and that metal shield ended up being left out or poorly installed in your particular camera, causing it to emit enough RF interference in the 2.4GHz band. Theoretically possible, can't really be tested unless you had a spectrum analyzer at the time (even if the camera still operates, the crash could have changed its properties), and all things considered, it's probably one of the least likely scenarios for why the plane crashed.