With the data you've shown, it's clear that Metawin wasn't heavily affected by the hack.
However this a sign that that they system was vulnerable and no one knew the reason why. It might be due to flaws in their information system security or some human related factors which has allowed to breach their hot wallets. BTW, the potential of any wallet breach is factor which prevent me from keeping large sum on casino's account, thus I used to use the withdrawal om my wins
if any as soon as possible.
I guess no one just expect that to happen and that is lesson learn for people who manage their casino that they should tighten up more their security and check on which area the hackers would attack them so that they can avoid any other hacking issues that might happen again in future. But we see how Metawin do some action and eliminate those fear immediately that's why instead of people losing their trust in this casino they gained good confidence since they see how the team manage well the unfortunate situation happen to them.
We should keep away huge balance to any casino account and deposit only the amount we can afford to lose or afford to spend.