Earlier quoted context omitted.
Divisive is an understatement. If this tech could be made to work flawlessly, it would be the gate to all the SciFi cyborg stuff, including body enhancements, "telepathy", etc. Also, as a "side effect", it would open a path to fully immersive VR, as in Matrix, Snow Crash, Neuromancer, etc - with all the upsides and downsides of those scenarios. All that "just" from hooking up motor and sensor neurons. And then people…
The dystopian downside is significant. It is not difficult to come up with half a dozen horrific outcomes of this technology.
I also don't trust the current brand of tech billionaires to handle this stuff responsibly - if they aren't specifically aiming for those dystopian scenarios even.
Based on all of Musk's past behavior, he doesn't exactly strike me as a guy who would deeply care for the disabled or make it his life's mission to cure spinal cord injuries - or even to grant super powers with no strings attached to the average person.
But he does seem like the kind of person who obsesses about the "next stage of evolution of the human race"...