Am I the only one who does not understand benefits in honey vs. highly toxic sap? 
It is explained in detail that the sap is extremely detrimental to human health, causing severe problems, and at the same time purportedly it is still very much appreciated by beekepers in France? 

Does that mean that the compound that permeates the whole plant (sap) and is toxic in small quantities is somehow completely absent from the flower? And if so, how is that possible? Or do the bees decompose the chemical during the honey production? Then it should be explained.