Yes, you're right with that statement, I don't know if you remember a thread made by a well-known member in the forum who was in a new casino, who didn't have a thread Ann here in the forum, but he played and was going to make a withdrawal and they started telling him no for very dumb reasons, and then that user said that he was a Legendary member of Bitcointalk and that he was going to make a thread on gambling just to advise everyone not to go into his site and mark it as untrustworthy, after This, they allowed him to withdraw, it really shows that the forum has a lot of power over the casinos, sports betting, it is because of the high level there is.
I guess, me too remember that case don't know exactly what casino but it really happened so if a casino is legit and don't even have representative here on bitcointalk still they care about the discussion going on here because they know it will affect their business a lot if they were marked as shady website also many reputed reviewing site also give attention to the experience of bitcointalk users about casino.
There are many readers all over the web and if so happens that the person who has a good influence in any forum it can ruin someone's reputation. If the site is not willing to risk their reputation, they will do their best to resolve the issue. It's very hard to established reputation and just a single mistake. The chance of ruin it is not a good way to facilitate the business.