I think this is similar to saying "this gamepad doesn't work" after losing 1 v 1 video game. People generally love to blame other when they lose in gambling. I personally dislike people blaming others about their gambling losses. Some people even go further and say "you sit there, that's only reason I lost" which is completely meaningless. Gamblers should have strong mentality to keep on gambling in my opinion. We should all stay sane.
The first instinct whenever an individual loses a game or is frustrated with something else. Point those fingers to someone and let the blame game begin. The sad part is when you are playing as a team and one player points his finger at his teammate, that will probably hurt.
I think that's one of the bad traits that we inherit from our parents or those we grow up with or it could be inside us but just needs to be activated.
Regarding the blame game in gambling, it happens a lot of times. Visit the chatbox of an online gambling site and you will see a lot of rants from gamblers.
But, I do feel them and that is why I just let them do it. If it could somehow help them release all the rage that they are keeping then so be it. Besides, I don't think an admin or a moderator will stop them unless they are using foul words which leads to the account being muted.
I do understand the frustration because many times that it happened to me too, an example would be a long losing streak and your wallet almost being depleted without any RTP happening. Those kinds of things happening to a gambler leads to frustration and they will think the system is rigged or they cheat. Well, it is rigged and we have to accept that the first time we lay our hands on an online gambling site.