Casino review should be an eye opener about the casino in particular. Many things needed to be known about a casino through review and not just praising the casino of it wonderful features and characteristics that makes it different from others in same competition.
As a reviewer I can probably say that when a casino has some features then testing those features and writing them in the review is the responsibility of the reviewer. I also try to test the weak points of a casino and try my best to recommend the casino owner to fix those weak points in order to succeed in casino business.
All of the casinos are there to satisfy their players and they do that in order to earn money for them as well, and if a casino lacks customer support or any other features then it's responsibility of the reviewer to highlight that issue in the review so casino can fix that issue and players will get some knowledge about that issue before going with that casino.