Don't blame the casinos, we players develops those myths that we would make success of we follow such displays of the casinos.
They might mean to us viewers that but it is ideally not a tip of winning rather a hint to how the game is being played basically designed for newbies as guide to how the game is played.

And as winning is of the interest of players we audience develops that superstitions myth that winning would be possible to attain if follows the casinos display just like this one.
In other words should be assumed to be advert so whoever that falls victim of the myth totally got it wrong.