What i don't understand, why does it matter if you have multiple accounts in the first place?
You aren't going to get higher odds of winning right?
This casino is just looking for reasons to not pay out this guy, and that sounds really fucking sketchy to me if you ask me.
Right, you do not have higher odds of winning but you can take advantage of their promotions which are usually available once per account (and per person).
I'm not trying to defend that obvious scam, just telling you what advantage can someone have with multiple accounts