I will also add about KYC. Those casinos that do not carry out this procedure before the deposit create conditions for violation of the law. And then the pompous statements about "responsible gaming" and law-abidingness are worth a dime. A child can make a transfer to such a casino, and, of course, the money will not be returned, even if he wins a million. In many countries, a seller (cashier) who sells alcohol to a child will be fined. Here is a close analogy.
Even the second account can be identified like this, before the deposit, during registration. Like in land-based casinos, there is a check when entering the establishment. Sometimes online players forget their password or even about their long-ago first registration. There is no need to immediately brand them as bonus hunters and block them (especially when withdrawing money). After all, you can: a) delete an extra account; b) disable bonuses and tournaments on one or both... that is, somehow reduce the degree of paranoia. 15 years ago I was looking for a casino without bonuses at all, so that I could play peacefully. I remember only one such casino now, at online bookmaker Pinnacle.



