This is also my take, every gamblers should always take a casino TOS serious. Casino's are trying to avoid being sanctioned by the government and would stick with their TOS in order not to put themselves in any uncomfortable position.
It's important to go through the TOS of every casino you use and when you relocate or travel to other area, it's better to check if they offer legal services in that area and if not, then use other casino available there.
It's not an issue using VPNs to access crypto gambling sites as long as they didn't restrict the country that you reside in though using mirror links as a way better alternative in such situations if you ask me.
Many gamblers make the mistake of trying to avoid such geolocation restrictions through VPNs and whine about it later on.