~
Was it Mark Twain who said that there are three kinds of lies?
Namely, lies, damned lies, and statistics. And since the intensity seems to be rising from left to right, we must assume that statistics are the most insidious and treacherous form of lies, even more damned than the most damned of all lies.~
Mark Twain was living in 19th century. Stats back then and today are two different things. Newsmen in 19th century often presented their lies as statistics because there was no way to check the facts. If, living in the 21st century, someone doesn't believe in statistics, he/she is pretty close to flat-Earthers, imo. It's a dangerous way to live, if you ask me.

The vast majority of Las Vegas visitors are middle-class customers, and although some of them still can be well educated, most of them are definitely not
In fact, I heard that narrative many years ago, that the majority of money comes from simple folks. But that must be an urban legend, myth, or something to that effect
C'mon! You are an economist, and you don't know that the majority of money comes from simple folks? I just can't believe that! I've been admiring your posts here since 2015. It's unbelievable what people can say in attempts of winning an argument.
Of course I know that questioning my own opinion is always healthy. So, if you have some reliable sources telling that the majority of the visitors of Las Vegas-style casinos are very rich people, or "crème de la crème", as you put it, I'd love to see them.