Would it help if the Official Tesla signs emphasized that the spots are not for parking, but for active charging only?
It doesn't matter. Parking, charging, etc., haters will be haters. It doesn't matter that we're trying to push the world to be more green, remove our dependence on oil, and that the $70-$120k cars are making it possible for the $35k car to exist. It just doesn't matter, you can't use logic with people who act this way. Perception is 90% of reality.
This doesn't mean that I don't put up a good fight.