Well the paid attack on the reputation of the casino works differently. The casino may hire a team of social media influencers to start a campaign against the casino. On a small scale, a casino may hire few accounts here to place false scam accusation against the competitor casino.
Yes, that's true, when a weak casino doesn't get as many active player as a strong one, then the weak casino starts to attack the reputation of a strong casinos with paid attacks by hiring freelancers or by paying good amounts to social media influencers. The public follow social media influencers pretty much and thus they believe in their words even if those words are right or wrong.