There's self control. So if those features that are no longer viable and working for him even if the casino has that. He still has his own way of controlling himself and avoid being blamer. Because you should really stand on your own decision as you gamble.
And this guy lacks that thing because if you do just be mindful towards your actions then you wont really be finding yourself on this kind of trouble which do basically involves self awareness and common sense.
If you do find out that you had been self excluded then its just common sense that you wont really be making more deposits but avoid as much as you could with gambling.
Having not such will just make him blame the casino and won't take accountability for himself. Won't look at the fault that he made but if he thinks that he has a valid reason for that complaint, let him settle that with the casino.
It is true that once you dont have this self control then those features would totally be useless because you would be just basically be ignoring those.
It always boils down to that part of self-control. It's important and it's not just limited to this casino and the OP but also for all gamblers out there.