Can't speak to this particular processor, but as far as why use Linux? Yes, it's about working at a higher level of abstraction. I'm right now finishing up a f

Can't speak to this particular processor, but as far as why use Linux? Yes, it's about working at a higher level of abstraction. I'm right now finishing up a freelance job: a pump controller that could easily be done in C on an Arduino. I chose to use an RPi programmed in Python because I could eliminate a bunch of pushbuttons, the associated wiring and a complex menuing system by using a touch screen and a Tk GUI. In this case it's about getting the job done with minimum development effort; the BOM cost is pretty much irrelevant. Remember, the term "embedded system" encompasses a huge amount of variation in project complexity.