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Though we can't blame the casinos on this because that's their business. It is up to the player if he will play or not. That's his prerogative. This is why, this business is a lucrative one if the management knows how to operate and get a hold of their vaults. Do remember, the control is on your hands, it is not on the gambling site. So the end game is up to the player not the site itself.
We all can do whatever we want with our money though. Each one of us has that right, so it is up to us if we want to risk it on a casino, that is a basic freedom, in my opinion. However, it seems to me that he is talking or making reference to casinos which purposely rig their games so gamblers get very confident with initial wins and using relatively small wagers, smonly for the casino to take all the money when those same gamblers decide to gamble heavily.
That is something only a scam casino would do, to be honest, and that is why I rather playing on games which are probably fair instead only partaking on closed source games, which do not give us to chance to use cryptographic seeds to be sure we are being treated fairly by the house.