Granted, the pluggy-end of a battery is a pretty benign place to put it. Apple probably has warehouses full of these connectors that need somewhere to go now that OEMs won't pay to license it. Dropping it in a battery is sorta annoying and arguably obsolete but also not the end of the world.
Now, if they could axe Lightning on the Magic Keyboard/Trackpad, that'd be greaaaaaat.