Even assuming your big expensive heavy bunker busters can penetrate & trigger as designed: Throwing big darts X square miles of mountain & hoping you hit a val

Even assuming your big expensive heavy bunker busters can penetrate & trigger as designed: Throwing big darts X square miles of mountain & hoping you hit a valuable target seems absurd. This feels like trying to depth charge a submarine, you just have to pour out endless charges & hope hope hope you get lucky. When those charges weigh 15 tons a piece, that's extra hard.