It cant be general, casinos should never do such a pratice although new players take bonuses on their first play because it is not fair to players to be accused something that they did not do.
I agree with you, I just made it clear that this kind of problem often happens with new accounts since several years ago and I don't know if this is still going on because users from our country are not allowed to create accounts. As I said before they want to prevent bonus abuse and when the problem can be resolved then there will be no more problems in claiming any bonuses. On the other hand I think this is another way to ask users to do KYC because currently KYC must be implemented in all casinos, especially those that use licenses and games from third parties.