The money paid for review is indirectly point out the good and at worse scenario, ignore the bad.
While these can be said about the majority of the paid reviews, a few might be different. For instance, _livecasino.io_ paid review for deposit and withdrawals. Though that review was paid, but there was absolutely nothing bad to say about the company's deposit and withdrawal system.
Base on this response is sure that reviews can be manipulated by the company in business throwing out money to writers. I therefore think that this aspect of verification is compromised.
A forum member has the opportunity to stay with the forum and do what members are doing by playing with many of the casinos around. Users here follow reputable companies and they don't hesitate to open up scam accusation on suspicion. So staying here and playing with known companies is a way to stay safe.