Since the belief in chi and its effects on health have been a part of Chinese culture for thousands of years, it is not crazy for someone in that culture to believe in it. I don’t know if it has been studied scientifically. I doubt there is anything to it.
What’s crazy is believing in feng shui, but not hiring the feng shui expert until after the remodeling has taken place. When I was an engineer, we worked with a contract manufacturer who shut down their beautiful new lobby and cut an emergency hole for a door into the side of the building, because the feng shui expert said the lobby would make people sick.