I agree with you on this, because it's quite rare to see a gambling casino that doesn't have such offers as a reward for registering in their platforms, and most times it's very instrumental in attracting new gamblers to the site, but the only problem with such things is that their will always be some set of gamblers that will want to take advantage or exploit it, by registering more than one account, so that they can benefit more. But if luckycoin can discover such persons or gamblers, it would be very good, in other for them not to be taken advantage of.
To receive the welcome bonus, you will need to make a deposit. If you plan to create multiple accounts, you would have to deposit funds into each of them. In addition, before you can withdraw any money, you will need to meet the wagering requirements on the full deposit amount, so this strategy is not as profitable as it may seem at first glance. And of course, if the casino discovers that you are operating multiple accounts, your accounts may be suspended or closed, and you may no longer be allowed to play at that casino.
If that's the case then it's safe to say that anyone that find him or herself doing such is just making a fool of themselves because it's not an easy task to carry out without getting unscathed.
Furthermore, since deposit is a must for such persons to have access to the bonuses, it might not be an easy task for them because they can be exposed easily with the transactions or deposit coming from the same wallet address, so it would be very easy to identify such person that decided to go such route, so all these should not be a reason why welcome bonuses should not be a must, because genuine players cherish it very much, since it's one of those things that spur them to give a new casino like this a try, and if the casino satisfy or give them what they want in a casino, them they will stay put because they have found what they have been looking for in a gambling casino.