The simplest answer as to why everyone smokes so much in Peaky Blinders is that it’s a sign of the times. It was not until the 1960s that the U.S. Surgeon General announced that smoking causes cancer.The simplest answer as to why everyone smokes so much in Peaky Blinders is that it’s a sign of the times. It was not until the 1960s that the U.S. Surgeon General announced that smoking causes cancer.