Yes.
One thing of this shit T&C, the casino still accepted and let you play even you're using VPN because just using a small balance. Now, the big problem is while you win a lot money more than a thousand dollars. There has some chance your account got blocked, due to restricted country + using VPN that's one of sketchy thing for casino still accepted a user with VPN even we all know based on their T&C is can't be use.
You don’t have any legal battle if you win big on that casinos and still using VPN because in the first place, that is the rules and you break that rules. There’s too much risk on VPN, this is not worth it and I’ll not do this if ever I gamble with big money, the casino can freeze any time your account especially if you violated their ToS.
Some don't have the problem of using VPN yet because maybe they are winning small amount of money, but when you win big, that's when most casinos will manually check your account and find reasons not to pay your winnings. And most of the time, if you are using VPN and it is against their rules, they have very good reason to freeze your funds. You will not win on this case, even if we say, they accepted your deposit knowing you are using VPN, because they are holding your funds. The least thing they can do is maybe return your initial deposit and not your winnings, and then, block your account. But don't expect that every casino will return your initial deposit. Because there are some conditions that they have all the right to confiscate your funds if you violated their ToS. So for me, just don't play on casinos with restrictions on this matter.