Pros:
it is more convenient to listen to music with the installed sound system as opposed to wearing earphones
the camera is firmly attached and will be more protected from dirt and debris than a mounted camera
Cons:
The built in sound system encourages listening to music but the fact is that it’s a safety hazard as you won’t be able to react to the surrounding as well to prevent an accident
I wonder if the built in battery could pose a risk as it’s probably a lithium battery and might explode in a crash