They are idiots, I happened to know someone who went on the same path, he found a trick on freebitco then and he made some good amount of money, he did informed me about it and I just told him that it won't last long, he decide to skip his night sleep and start using the same trick till the next day.
By the time it's morning, I got his call, he told me how he lost everything, like I saw it coming already, if something works for you when gambling, the first time, second time and third time, it's the game trying to lure you, the trick is making you believe that you find a way and you will probably even risk way more money because you found a way.
This was what happened to my friend, never ever think that you can outsmart any online casinos, even if there is a glitch or some vulnerability in their platform, it won't take long before they find out and fix it, and they will get you good next time even if you are able to withdraw whatever amount you won.
I saw a couple of casino tricks being posted on YouTube last time. Maybe this is where your friend finds it? But he is lucky that those tricks are still working and this could simply mean that they are not fake?
Cool, but it's also possible that your friend is only lucky that time and he thinks he won because of the trick that he is using. With what I said above and also about the glitch or vulnerability that you said, it's not just a lure that have occurred there and the casinos needs to detect and fix them because if not, it is going to be a threat to them but smart people will think of different ways on how can they take advantage of the casinos again.
His friend was so greedy that he wanted to empty the casino's funds overnight, but he didn't know, that as he is playing with the trick and winning, it will call to the attention of the casino to know why he is winning with the same pattern, which will make them to notice that there id a glitch and it will be fixed.
Most times when we win three straight games, we will feel that, the pattern that we used id superb, and we will want to stake with a bog amount of money with confidence, and this will make us run at loss, because we were only lucky to win those three games, and it was not based on any pattern that we used.