Think of it in another way. Let's suppose he was able to exploit the bonus with two account and withdrawn the money. Later would he be willing to return the money back to the casino which he got from the 2nd account ? No. So why Casino should return his money when he is found guilty.
Here is my prediction, if he managed to withdraw again from the 2nd account, for sure he will not return it to the casino and hey may try it again by creating 3rd account. Cudy89 is obviously greedy gambler because maybe he found a way to take an advantage from the bonus provided by betcrypto and he wants to do it again and again till he collect a lot of money. Talking about fair or not to confiscate the winning and deposit on the 2nd, there will be always 2 different perspective but in this case I support what is done by betcrypto.