I would not be surprised if they could not finish their task by March of 2024, or something like it. I have had to deal with databases and Microsoft Excel myself and when managing thousands of entries and while trying to exclude unnecessry data from it, it can be a very challenging and time consuming job.
Hopefully noone of the people affected by this unfortunate event is counting on that money they expect to finance part of their Christmas or seasonal celebrations this year.
It's very easy. They should only take into consideration claims from registered emailaddresses. That saves a lot of work and time. And then all is left to do is check the amount.
But nobody will claim double from the same email, that would be insane.
I think they have already mentioned in this thread that they actually lost access to the data base of their clients or something like that, because of the people within the casino who went rogue and decided to sell that data in some shady corner of the internet, for more profit, if I recall correctly.
Anyways, if that is the case, I would not be surprised that is one of the reasons they are taking their time to start to refund those satoshis to their legit owners, with a realiable database to compare those request, it would be easier to commit mistakes and filter legitimate refund request from bogus ones.
Quite a time consuming and tiring task, I don't even want to imagine how frustrating it must be.