If a crypto casino gets hacked, then i don't expect for a refund, because they also are going to suffer a huge loss, as the hackers will loot everything from their platform and disorientate the platform, which is why we must be informed that we cant afford to leave more of our asset on the gambling platform except we can afford to lose them, which we don't pray for anything to happen to any casino and our own account with them.
But if you have ever had a huge deposit there, I don't think that it's easy to say that you won't fight for a refund. While the hackers can take all of the funds that are hackable into their wallets. It's possible that they have a reserve and sort of vault where they keep that wallet offline and have their back up to pursue their operations. But if not, then that's it for all of the funds that have been deposited to them. Although no one leaves a huge fund there if they're not going to spend and use it for betting. It's just a scenario that could potentially happen for some users.