They removed bitcoin due to price volatility and irreversible function which is against there ToS. Bitcoin is not removed just because it is not secure and so on. I believe this is the reason why stablecoin are more appropriate to used as payment instead of BTC on this kind of services.
They can adopt the third party service which can be an advantage for them.
Even if their players like me will pay in bitcoin directly, there's an easy way for them to transfer or convert that to dollars or to a more stable currency which won't give them worry about the volatility. Well, I hope that they'll get it back again.