I purchased a crescent wrench with the same warning, but, at least I am warned that if I eat a wrench, there may be adverse consequences.
People seem to have a deep seated religious need to fear something, since the end of the cold war and reduced likelihood of destruction of the planet, we had to find some other evil spirit to worry about. The decline of organized religion has left a void for the new age liberals. Replacement for traditional religious practices for this new age includes the regular attendance at the alter of the Church of the Holy Carbon Footprint. Global warming, cancer from crescent wrenches fill this deep seated religious need. Repent for the end is near due to crescent wrenches.