I don't doubt that the scenario you present could have happened. Also, I agree completely with your view on extrapolation of facts and prejudices.
Based on my experience with (a) the passengers I'm most often seated next to as a frequent business flier, (b) people who excuse their behavior with "that's how we do it in New York," and (c) those who offer "I was hung over, but I wasn't still drunk" . . . I'll be betting against you in Vegas.
But I won't laugh when you play your chips.
Having skin in a game does tend to focus you mind doesn’t it.
Don’t expect to be to Vegas anytime soon. If I do I probably won’t be gambling.