In the past, gambling with bitcoins (let's say with crypto in general) was still good for a certain degree of anonymity. It seems to have disappeared due to the KYC. Granted, not all sites implement this. But even if you would sign up with only your email address, that is no guarantee that you can gamble anonymously. So I think we can no longer put the notion of anonymity on the scale as an advantage, because that seems to have disappeared. Fast deposits and withdrawals seem to be the most important right now.
I agree with the implementation of KYC all the anonymity advantage of Bitcoin has been nullified. Now the only advantage of using Bitcoin in a gambling platform is not needing a bank account to play. Aside from that, depositing Bitcoin to a Casino takes time so basically this is one of the cons of using Bitcoin so I prefer to use coins that has faster confirmation so that I can play as soon as I send the deposit transaction.