Yes, avoiding problems would be better so that we feel calm and comfortable while gambling. So far I have always avoided and complied with the rules in every casino including Rollbit and sure enough I never had the slightest problem at any casino I used.
If you are playing within their rules and are not withdrawing huge amounts you would not face any problems.The problem arises in certain cases like suppose a user had multiple accounts problem and casino has mentioned this as violation or any other issues they will take action against player but if you are normally playing it won't affect you much.
Saying that withdrawing big money will bring players into trouble is not entirely true because you can see in rollbit a lot of whales players who will definitely use big money to play and the wins that will be obtained are also very likely to be huge and none of them complain when they do withdrawal means they can receive the money smoothly. Only players who are suspected because the casino sees suspicious activity that will get him in trouble, as long as the person is playing normally and doesn't break the rules then it will be safe.
Also I can't understand why there are players who do multiple accounts at a casino, I don't understand the benefits they will get by doing this, unless the casino is holding promotions such as bonuses it is very possible for players to abused by doing multiple accounts, but multi accounts for normal play makes no sense in my opinion.
If that is true then for sure no whales will play on their casino but we don't see that happening so this is false information only. Maybe they will be ask to submit their identity for verification since this is what actually the best thing to do by a casino since we don't know if the owner request that or just a hacker so it can give a relief to the owners if they just look at the positive side of KYC.
Maybe some other create multiple account to exploit the contest held and get more higher advantage to win. But any reason aside from that there's no really use to create more than one account since you can deposit your desired capital and play.