Only tactic from their side that made sense to say something like this about VPNs would be that if you get caught when they ask for kyc, they can legally just confiscate your money as it would be your fault not reading the ToS where that country wasn't allowed in to begin with.
Go to livechat and ask this question, they will repeat that you can still access the site by using a VPN even if you are from a restricted region. Until know, I haven't really heard of anyone that needed to submit KYC and haven't heard of any problems of members that are doing this.
but all licensed casinos ask to do KYC, so sooner or later they will eventually ask all customers to do KYC, this is what all casinos have spoken many times, now about this issue of allowing people from restricted countries to be able to using the site using VPN I think this could create problem for the casino, I am not an expert in laws but I think that if the casino is allowing a certain customer who is in the restricted country to play in the casino using VPN then the casino is breaking the rules laws of those countries and may be held criminally responsible
I don't know to what extent the governments are supervising the casinos or to what extent the government of Curacao is supervising the casinos that they grant licenses, but this point of allowing people from restricted countries to use the casino is something so serious and problematic that it can bring serious problems to the casino in the future, I hope I'm wrong and it's just my imagination
Many will also be forced to submit KYC, particularly those who staked thier BFG on the casino itself. They will not be able to withdraw the tokens and the profit if won't send thier documents.
It's becoming normal already for casinos in crypto but I think the decentralized ones might still take a long time for them to be regulated. The casinos where you have to connect your metamask can be hard to regulate.