Are there still gamblers who use multiple accounts just to be able to claim the promos given by the casino because for now there doesn't seem to be any promos that are attractive enough so gamblers can take advantage of using multiple accounts.
You will, be shocked at the magnitude of greed some humans can have. Multiple accounting, even for promo bonuses that are unattractive, isn't something that is about to stop. There are other reasons people can also multi account, including trying to cheat in the referral program, evading bans or betting limits etc