Well, we don't know how they abused it but what is certain is if they can abuse it to the point of making 10 accounts, that's equal to $50 a month

it is very strange that the casino is not able to catch abusers and one of the great measures that the casino could take would be to ask that when creating an account people start to put email, full name, residence address, valid telephone number that would later be sent an authentication code that the person would need to use to confirm the account registration, this way it would be easier to combat the many accounts that are created with the purpose of abusing the faucet, and the problem with that is that when the casino puts basic kyc something like asking for a phone number people are already complaining because they don't like it
they think this is something that takes away their privacy but if the casino doesn't do this they run the risk of suffering from abusers, so this is definitely a big problem and in my opinion casinos shouldn't be offering satoshis on faucets , it would be better to give free spin or free bet for active players than to put faucets that will only bring harm to the casino, I honestly don't see any reason for a casino to have a faucet