You have a good point there, we should never trust any website, especially those casinos that are not being reviewed by users but the operators. And if they are being reviewed by supposed people, how are we sure that they are true human beings and not bots? Peradventure if they are not bots, how are we sure that they are not paid to make the reviews? We should trust nothing online these days, not even the handles of our trusted netizens, they could have been paid as well. But in forums like this and a few other websites where people are reviewing, you can know the genuine ones and the fake ones, and even if you can't know it all, you will know it to some extent that you will be able to trust it to a reasonable extent. Above all, forums are the best places to read the true reviews of things, and if the forum is a long lasting one with track records, you do not have anything to worry about as most of the reviews would be genuine.
You are right, every review from websites, influencers and operators is a review that cannot be completely trusted because some of them will receive payment to compile reviews that can influence other people to gamble at scam casinos, they don't care about the reputation of the casino but they will agree to the proposal review when the value offered matches their expectations, so don't trust gambling reviews from outside the forum unless you can analyze some important points yourself to judge the reputation of the casino, just focus every review on the casino in this forum because we assess all aspects without manipulating any reviews because all analyzes are published for the benefit of the gambling community to avoid scam casinos.