There are tons of similar websites, and many have appeared just recently. But somehow I can't mention a single one that became reputable and popular within the community. At the same time, I think that such website can be useful because scam is a big problem with crypto casinos that solid rating systems could help avoid. The problem with review websites, it seems to me, is that they tend to mix reputable websites with no-name websites that pay them or something. Unikrn is a casino I've never heard of, for instance, and the total list of 5 is clearly too small to be helpful to users.