You might actually be right, from what I've heard. Fever, like vomiting and diarrhea, does seem to actually serve a purpose for the immune system. This doesn't mean you shouldn't take anti-fever medications if you have a dangerously high fever, obviously.
Note, I am not a doctor, so take this with a grain of salt.
If you sort by highest lead content you get "NOW Healthy Foods Certified Organic Cocoa Powder 100% Pure" as the top result, and highest cadmium content you get "Sunfood Super Foods Raw Cacao Powder- Certified Organic" at the top. I find it hilariously ironic that the two highest ones are "Certified Organic". Also, the highest lead one was "100% pure".