I think it has never been mandatory unless we won a huge amount that requires manual verification and KYC.
For your reference: https://bitcointalksearch.org/topic/m.56856020
The important thing is that it is not mandatory now, and that is quite enjoyable and usable, some casinos are quite rigorous with their rules and do not give space or dug for something else, I think that Roobet is doing things very well, it is a casino who, as Player one feels comfortable and safe, he is also positioned in one of the casinos who trust here more, and the reputation in this case is everything, at least I as a player I think this is the best, our money here is Sure, in addition that in the jeugos offered by one can have fun with the security that if a retreat is made quickly.