That does make sense, because the pedal would just unscrew without the ***-backwards thread. It's a bad design though, because there are so many better ways to stop things from unscrewing, such as keyways, splines, set screws, cotter pins, double-D shafts,... If you really need LH nuts how do the wheels stay on race cars doing 200 mph without them? You know darn well that NASCAR and similar oval track racecars, plus drag cars that go 300+ have not used LH nuts for at least 75 years, and I'm willing to bet most never have.
