Maybe it's just a good idea that didn't occur to them? (Not being snarky, I'm curious too.) Related: Is there a way to design an electromagnetic coupling that

Maybe it's just a good idea that didn't occur to them? (Not being snarky, I'm curious too.) Related: Is there a way to design an electromagnetic coupling that only uses significant power when it needs to work hard to maintain the connection? Because otherwise I could see battery drain being an issue.