For me the way that can affect gambling negatively is to leave it without money, without money the problems will become harder and therefore trigger more things, then in view of this these problems we generate them ourselves, and that is called having irresponsibility, having irresponsibility the casino for those cases become negative, but the fault is of the player who does wrong.
I don`t think that it is serious problem. It is mostly about gambling addicts, about who we read lots of threads here.
But the truth is that there lots gamblers without addiction, who play time to time with small sums, they can allow and have no problems with the game. Except situations when the gambler can`t buy beer due to gambling.
We see lots of threads how awful is gambling. But threads about positive moments of the gambling are really rare.