The measurement of Calories in the context of nutrition, used in the correct way, are not a problem. They simply relate a reference of the potential energy in the material. If people are being taught that it's calories and only calories that are important in nutrition, then obviously they are being misled - however, in several decades of paying attention to the topic and meeting a few 'experts' along the way.. I've never heard anyone saying that - except maybe for marketing material from 'diet companies'.

I do ignore, though, the mainstream media and talking heads - so there may well be a normalised approach to this is that is super dumbed down, but that I never hear. It is also definitely true that, in general, the real depth of information available on nutrition is not usually discussed unless people seek it out or make it their career.

A lot of this actually stems from farmers who either through stupidity/ignorance, denial or greed - simply pay no attention at all to the real spread of nutrients that their produce needs to contain and so never market it on the basis of it's nutritional content. Some of them probably do this because they agree to do so with the supermarkets, who know that they make the most profit from people being in denial and sick as a result. Some of them simply don't know any better.

Ultimately though, it's the 'eaters' of the world who have the power here.. Unfortunately, their lack of minerals has led to a low IQ and an inability to trace the sources of their power loss.