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It seems that he did never go to areal casino because things are totally different from what he describes. It's no longer the old fashion casinos with men with moustaches and hats. Now, you can se women sitting equal to men on the poker table and they may ask for the same drink as them. Furthermore, it's most likely the woman sitting on the table who is going to win because she knows how men reacts.
It is probably the case, when I visit a casino I often see lots of women gathering on slots although there are still man playiing on that area, they are greatly outnumbered by women. I even see lots of old ladies enjoying their time playing in the slots area.
It is true that in traditional casinos now there are lots of men and women becoming one in the casino to play in the games they like, not only slot games but like poker dice some women also enjoy.
What's more, now there are many conveniences for gambling, such as the growing development of online casinos from fiat to crypto basis, which allows everyone to gamble wherever and whenever they are.
What I don't admire is that there are not a few women who have much better abilities or experience than the men there.
I asked for the research mentioned in the OP but I got nothing in response. All hearsay.
The research in OP is pure bullshit. Better ignore it and move on.
True that, research without supporting links is almost the same as made-up existence.
From the start, I also didn't really believe in the research made by the OP, even if we actually did research directly at most of the existing casinos, it was very different from the research made by the OP.
Here I agree with @khaled0111 that it is better to ignore the research made by the OP.