Therefore, a person fills in the gaps in his knowledge with faith or superstition. This does not prevent a person from being efficient and successful.
Therefore, feng shui is very popular (including in the field of gambling).
I don't mind people believing in superstition as long as that belief doesn't affect their surroundings negatively. Or that belief motivates him to be a better person. Like in Fengshui, the peace of mind brought by aligning the house decor according to Fengshui brings to the health and good mood of a person will surely make the person friendly, cooperative a good influence to the society.
Well gambling and Feng Shui both originated in China so it is obvious that the gambling industry is also influenced by Chinese traditions thus for the popularity of belief in the effect of Feng shui in the gambling activities