The Ladder is as useful as it is difficult to climb.
The ladder needs two surfaces to function, the ground (as status quo), and a horizontal surface (as an irregularity that cannot comply), without either the ladder will fall. A good climber is supported by the status quo, stablised by many-handed presumptions.
In parody the ladder is only ever as stable as these two surfaces, one uncertain assumption and the climber looses footing. Either the climber falls and must find a way back up, or the ladder must move to a more stable surface elsewhere. A climber on a wobbly ladder won't stay long hanging on for dear life, the public don’t want to witness desperation, it’s cruel and unseemly. Better to fall in a bloody heap than flail around in uncertainty.
The ladder is not comfortable place to rest, it's only a way up or down, anything in between is fleeting.