<<>> I believe a simple answer would be that a player is expected to use the casino as a place to gamble not as a wallet.
In fact guys, I will share with you, I play at bet365 and recently I didn't play there for like months so they took away some balance of mine and sent me an email about it. So if the best and biggest sites can do it, surely bitsler can too.
I understand some people might return after more than 6 months but they can just create a new account and the support can merge the account under the same affiliate, I guess.
Is the gambler not allowed to create a new account at bitsler if his account gets deleted/suspended for inactivity in few months? If he creates one and in future, bitsler comes to know that he's the same gambler who left the site for long time but didn't come back, so in that gambler's safety, will bitsler use the "multi-account" term to stop that gambler from making a new account?
A simple way for a gambler is to withdraw their funds immediately once played at the casino, which prevents them from losing their funds some time in future if they forget about having kept them on that casino.
If your account is deleted, then it means that all the information about you is deleted and generally, you don't have account on Bitsler. Since you don't have account on Bitsler at this point, you can feel free to create a new one. Every casino welcomes if old users return to them, so, without doubt, there shouldn't be a that kind of "barrier" that you say.
And overall, user shouldn't leave their funds on another casino, the wise people have said - not your keys, not your coins. This doesn't mean that it's not safe to leave funds with Bitsler, they give you six month to withdraw but just saying, if you are going to leave the casino forever or for months and years, then just withdraw money and say goodbye!