I have used more or less most of the popular cases on this forum. And almost most casinos allow small gamblers to withdraw small amounts without kyc. Like I use stake regularly without any KYC and withdraw some btc from there every week. sportsbet.io also offers kyc free withdrawal and coinplay also offers kyc free withdrawal for small amounts as per my knowledge. So you can definitely use casino sites without kyc if you are a small gambler. It will not be a big problem
Its that you will enjoy KYC free experience on casino if you are small player but theres limit on this when you reach the minimum amount allowed for the total balance you deposit in the casino. This is not a danger for those small players that is not frequently playing but you might be required to do KYC in the future if you are always depositing money with just small amount.
AML policy has a minimum threshold to require KYC and it doesnt matter if you are playing honestly or small amount.
Yes it is definitely only possible for small gamblers to use casino sites without kyc. Because without kyc very big transaction limit is not given which is why KYC is mandatory for big gamblers and big amount transactions and bets. And if they don't do KYC any time they may face problem and in that case their money will be at risk. So big gamblers must kyc because if they Don't do that. it will put their money at high risk