It remains all superstition to me, one of the many superstitions surrounding gambling. If a madman can give correct predictions for a game, why has no shaman or prophet been able to give correct score predictions for several games?
Most times the people who tell this kind of story always claim to have heard it from another person; it is rarely a firsthand experience.
Crazy people only say according to what comes to mind, without any analysis or whatever it is as a definite reference to make predictions, there is no credibility that can be accounted for.
I agree with your sentence about this crazy person, it is just a gambling superstition, do not burden yourself with the nature of friends, because it is very out of logic, names basically luck cannot be predicted in gambling.