We all have to be accountable on how we are gambling and not that we shift blame on others, gambling is more of a personal decision than shifting of the blame on other people, we should know this, that whatever happens in it, we are going to be more responsible for it, because its all about us and we should not allow for the others to take the full responsibility of what we are expected to be in charge for, also, we should not shift blame on anyone for any failure experienced in gambling.
It's usually newbies that will rather shift blames on the casino instead of taking the responsibility for their gambling decisions and results. The blame they shift on the casino probably makes them feel satisfied or less frustrated but at same time it builds up problems for them such that they would not want to learn from their mistakes and it is very bad character to exhibit.
While at the end, all these doesn't change anything, when they have already lose the game, though as you have mentioned, they catch the forum and in so doing for relieved of the stress on loss, while in some cases, we can discover that the gamblers don't even do such, either they win or lose the game, they move on as they have already expected either of the two to happen, we don't have to be too desperate with gambling, that we must win and if we lose, then feels disappointed for nothing.