Keeping most of the money in the wallet by saving it in the form of tokens is indeed very profitable for some people because indirectly it can also be an investment.
But here what I'm wondering is that OP has the nerve to take the risk of keeping such a large amount in the casino's wallet.
This is an inappropriate choice in my opinion because the risk is big and if you have bad luck, it's like the OP where he became a victim of hacking to the point where he lost everything he had in the casino wallet.
I don't know what the OP's goal is by keeping so much money in the casino's wallet, whether to gamble or just save it, but this is a valuable lesson for all of us to be more careful and always consider what to do, especially regarding the money we have.
It's a sign of being a compulsive gambler, you don't make the casino wallet a place to store your funds, two of the unsafe place to store are exchanges and casinos, noncustodial wallets are always the safest.
I'm not comfortable keeping even a small amount on casinos I make sure to deposit what I will use to play and if I won I withdraw it all, I know my limitation and I know how the amount I will fund that I think will satisfy my gambling urge.
The nerve? It's one of the larger gambling companies in the world, should I ask them to place bets for me and I'll pay them if I lose? You need to deposit funds to gamble, funds were deposited and gambled. As soon as they removed the 2fa they stole the funds, less than ten minutes later. The point, whether you guys are all shilling for online casinos or not is that they had a flaw in their system that they had been made aware of and didn't care to update the security. That's shameful that someone betting 100 dollars and losing 1000 dollars to a hack isn't important enough for them to add the security the did once it happened to me. I don't use the company as my wallet, when done a session I withdraw, when starting a new one I deposit.