I just checked trustpilot and to my surprise, they score extremely high over there: 4.7/5. Never seen a casino so high as most of the times, you will have more complaints than positive reviews on there.
Trustpilot is actually Distrustpilot based on my observations because half or more of their reviews aren't trustworthy at all. For example, a site like 1xbit has 3.8/5 stars which literally says everything by itself.
Proper feedback for crypto sites can be found only in dedicated sites like Bitcointalk etc.
I like bitcointalk for checking websites reputations too because you can check user history of posts and also user reputation here
sometimes there are review websites with false reviews or simply people buying reviews
in the end of the day you should always do your own dilligence before depositing money anywhere