These graphs make more sense if harmfullness iwould be displayed vertically in a scale of 1 to 1000, measured by ld50 value. Then you would find psilocybin at 1, alcohol near the top and cafeine around 640. The way it is now is highly suggestive, as if lsd and psilocybin are the lesser evils but still very bad and unhealthy while that is just not true.