What's your opinion about this please?
It is common in my country for people to blame demons for their mistakes, carelessness, foolishness, and mediocrity. When criminals are caught they always blame Satan for pushing them to engage in the crime. If you were oppurtuned to know this man's gambling history you will be surprised that he was a careless gambler who never took any precautions during his gambling days. After he had lost so much, he would generally blame demons.
His claims are false because it has no scientific or even religious backing. This mindset is one of the superstitious beliefs that people blame after they have failed to do their homework. Anybody familiar with gambling will know that the house has more advantages and if you are not comfortable with the area arrangement it will be better to stop gambling than to blame demons.