If any user abuse the system of bonus then the user should be banned/limited as a punishment. More than one account is not necessary for a user so it is okay too. And the behavior should not be aggressive if aggressive then they may ban. Could not understand what is the fault of ignoring offer of bonus and promotions??
I am not really that active in depositing and in gambling so I didn't bother to use that trick. There is also nothing wrong in winning too much, as long as the win is legit but winning too much can be rare because gambling sites always have an advantage.
They limit your withdrawal as well and offer you sympathies for a while and maybe even offer you gifts if they found nothing at all. That is why I believe it is normal for someone who keeps winning all the time to get their account blocked for a while, if it is forever then it is a problem but it is normal if it is temporary, so that the casino could check what they have been doing.
If you are that innocent on doing something then you wont really be that thrilled nor panic out if ever security measures or alerts kicks in.It is really that normal for businesses like this
but dont worry if something that cant be proved out.