We can use a positive review as a judge in this case, since we all know that reviews can be manipulated, but when we have a platform like this which is reliable and a review is been conducted, such can be taken as valid because the members of the community have tasted the bit of what they offers and are given a genuine review on that, also the use of kyc or not doesn't make the review on a particular platform valid or invalid, that is just be the way, we have that to only includes from the requirements on their gambling policies.
I don't care whether the reviews are positive or negative, the first concern for me is that the reviews are real and not manipulated one or paid ones. No matter how much trusted the casino is, you will get a mixture of good and bad reviews (though good reviews will be more) and that is the best to judge the platform and know what its strengths and what are its weak points.
If ever I develop any casino review site, I will allow a section where the gamblers are allowed to post freely and those comments are published on the site without being censored or edited. This will help to know the true feedback of the casino site.
You're right, what we should first set focus on is on how the review appears being a genuine one or not, since people can have different means to ensure that they manipulate for this, we need to be very careful while going through some of these online reviews, also, we have to be more considerate, what i mean is for us to have more than one means of making our review confirmation to ascertain the ground that the first one received is not fake and none as well is not being manipulated.