Even the legit services are hard to trust in these KYC matters because they store these data with some third party software where privacy breach can happen anytime or they could sell your data on dark web using it for illicit works so how do you remain anonymous in this market is what makes you safe.
Not all legitimate services cannot be trusted to maintain data privacy so we should not be pessimistic about this and assume all legitimate services cannot be trusted. I'm sure the casino partners with reputable legitimate services to keep customer data safe and not use it for anything prohibited.
We actually don’t know if our data is secure or not because even big companies are exposing our details just for the purpose of promotions. We just hope that Roobet is really safe and we are hoping that this KYC requirement can still be change. Crypto gambling is slowly becoming KYC mandatory but we should not worry that much as long as we secured our personal accounts, we are still safe. If you are not ok with Roobet policy, then try to look for other option that is still KYC free, for sure there’s still a site that will allow you to remain anonymous.