"Hutton’s uncle, Scott Potwin, said the last time his nephew piloted the single- engine aircraft, it had lost all power and communications."

That line requires an explanation.  On that flight the airplane lost all "electrical" power needed for communications, nav aids and flap deployment.  At no time did the aircraft lose engine power.  During that incident, it flew just fine.  When you are learning to fly, you are trained for stuff like that.  Alternator issues happen a lot, especially in older aircraft.  Night flying VFR is fun, but you gotta be on your game.  No unnecessary yakking from the three passengers.  That can distract the pilot a lot.