I'm pretty sure, if the casino is reputable and has a big name. will not take actions that will harm its users, except if the user commits fraud. anyway, if it happened. the one that will get the most big losses is the casino, that way we as players will choose a casino that can be more trusted.
True, there is competition in this industry and sometimes competitor uses propaganda against their competitor, one of which is accusing the competitor of injustice and scams. There are also players that wanted to tarnish the reputation of the casino after losing a significant amount of money thinking that they are cheated by the casino and many more.
The thing is no matter where the player's accusation is, the reader should weigh the evidence since casinos cannot disclose much information because they are bound by privacy law. The reason why when they answer most accusations, they only tell some facts unless the case escalates to a higher authority.