This problem happens at my hills also and i understand your point, but the thing that pisses me of is the fact that they do it in the advanced park or the medium park. My mountain has a beginners park where if people do this you can understand because there still learning but when they come up to a 40ft and get enough speed to go of the jump and land to flat or carve the lips, walk side ways up a jump its so annoying. Dont yell at them tell them they should go to the beginner park if they cant hit the features.
Also at my mountain the instructor will take the little group of milo(tiny tiny kids) lesson through the medium park and purposely take them over the lips of the features which i think is complete stupidity and disrespect for the park crew who then have to fix the features all because some instructor was a douche bag.