Adding Bitcoin to gambling is the most important thing if you only list altcoins it will not be very good for the development of a casino. The reason is simple where the goal is to prioritize privacy but it will not go far with crypto payments, and to complete a crypto gambling Bitcoin must be on the list. Otherwise, it will taste bland. Bitcoin is more private whereas altcoins are not. So if with the title of privacy, Bitcoin is the right match.
This is simply untrue. Any cryptocurrency with a public ledger of transactions and balances cannot be considered private. We do not support any cryptocurrencies other than Monero for this reason. I suggest reading up on what Monero is first.