If one can accomplish the same engineering outcome through mechanical means as they are getting through electronic means, then by all means, do it.

That's an old adage of mine. Electronics have lower engineering costs, weigh less, and cost less. But when they fail, things are often more detrimental to a positive experience. Think electronic steering or throttle.

The diff could be its own system with a certain amount of autonomy when the computer is off, or it can be full-slip. We'll have to dig more to find out.