I know binance are also in a problem of btc withdrawals but they provide some fixes like you can withdraw your btc on other chains. Is this site experiencing the same thing? But if not and this really how it works ( can depo btc but can't withdraw) then they should change or rename their title and remove that btc word as that can only confuse the gamblers and can cause them to experience a problem like their btc can get stuck on this casino as they only like btc and they don't want other coins.
It's different, the exchange is not the same as gambling, the exchange is preparing for any situation if you have a problem in one of the chains. Gambling only has the situation If there is a problem with a game, the option for another chain will make increase the server load, so that will undoubtedly increase the burden of operational costs also. And in fact, BTC only has 1 chain, don't get stuck with that word (another chain)