Climate preaching, calling on consumers to voluntarily and individually protect the climate, induces a feeling of guilt which elicits climate denial and the observed reluctance to communicate the problem —climate silence. It is argued that climate preaching is therefore overall detrimental. The implicit induction of guilt and its rejection is a major reason for the difficulties to communicate on climate change. The argument is exemplified by the story of Ignaz Semmelweis, the pioneer of evidence based medicine who was born exactly two hundred years ago.
There is not much good but nothing wrong about living an ecological lifestyle to mitigate climate change. However, there is a lot bad about advertising it.