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Well, I have a experience to like these.
The address are being multiple time, but deposit with other chains the address are different. I deposit to address but with a wrong chains, I get my money back after more than 1,000 days. Since, they broke term & condition by their own.
TBH, every casino needed to have reussed address + worked by multi chains with the same address.
Sometimes some platforms can be good to make a refund if you contact the support most especially those that are paid into the wrong chain, I experienced that in an exchange when I sent in the wrong chain address and support told me to give them 3 working days and after the timeline, the money was released into my account so yes what you said is the truth.
But we have some sites that make dead-end mistakes if you send it to the wrong address you should consider your money gone and the warning is always boldly written to send warning signals to defaulters.