I think their justification for the charging port on the bottom of the mouse has some legs. They state that the cable is not designed to handle much stress around plug and they've assumed that given convenient location, users may be tempted to leave cable connected at all times making it prone to premature failure. So they've opted for short "usage down time" instead of that.

Or they could just make a better cable like every other cable manufacturer has done.

But this will cut profits, so no.

So form over function in typical Apple fashion.