Exactly, even if the reviews on a review website were honest at the end of the day you need to do your due diligence anyway, besides it would be a mistake to trust the judgment of a single person when it comes to a service, as a popular casino serves a lot of clients every day, however that is not even the case when it comes to review websites, they take money from casinos to give good reviews and basically publish whatever they are told by the casinos, defeating their reason to be and as such there is no reason to use a great deal of those websites until proven otherwise.
Review sites are just an explanation of the list of online casinos published on the website, so some site owners affiliate with certain casino sites to increase the recommended top rankings to visitors, so there is no need to trust any review sites and do your own research to find out more hidden facts from online casino sites, I recommend staying focused on online casinos available on the forum because each casino has an active discussion thread from member responses and also admins are involved in discussions to provide solutions or the latest information.