What's your opinion about this please?
The evil tempts humankind since the early times, as we can see on the stories and teachings which have been told to us by our ancestors and which are intrinsic to our societies and cultures, doesn't matter where you are from, as it's common to all of us.
Naturally, the desire and pursue for money is directly related to that temptation, which turns mankind into greedy individuals who lose control over their principles and values, so they can achieve material wealth and become more important and influent among their pairs. We don't know exactly from where such temptations come from, how they take control of us, and why some individuals are stronger than others when resisting to them.
But we can't deny it doesn't happen or doesn't exist. However, it's not possible to say demons manipulate the bets' results on the favour of the casino, because we know there is factor called house edge, which gives a mathematical advantage to the casinos on long run. That is why they profit and gamblers lose.
That factor "house edge" is what the passenger points as the demon. lol. It's misinformation that led to it, he needed to be educated on how gambling works. While people try to let gamblers see the game in a false view, being countervailing could be the case. Because the gambler also wouldn't accept whatever a non gambler has to say, in an unpleasant manner. Hence, gamblers who get to associate with free speech non gamblers who wish to air out their critic on gambling, they should engage them as well and not feel stigmatized. This will not only help the player, but the non gambler would be learning something new. The risky aspect of it, is that the non gambler can become a gambler and may not be opportune to have indebt knowledge of gambling.