1. KYC requirements reduce money laundering.
2. KYC requirements reduce under age gambling.
3. KYC requirements increase the possibility to hold people to account for their actions. (Exploiting casino systems)
4. KYC requirement reduce scamming
5. KYC requirements can be used to restore accounts after it has been hacked. (Using the documents that were used by the original owner)
6. KYC requirements adhere to government regulations and legitimize a casino.
7. KYC requirements can be used to reduce gambling addiction. (Identifying people that self-excluded or people trying to create new accounts)
8. KYC requirements can be used to enforce regional gambling restrictions.
It all depends on how you look at it. These are more excuses for KYC than measures. Alternative ways to beat these problems can be done. KYC is just the lazy way, with the bonus of profit for casinos when people
1. Money laundering can be reduced without KYC, rather with open and transparent rules before withdrawal, time limits. Etc. KYC is the lazy way of combatting money laundering.
2. Asking for KYC is not a legitimate reason for age proof. Porn is illegal in most countries for underage viewers, yet all you need to do is click "I am over 18 to enter" - why is gambling any different? Most underages do not have the funds to gamble anyway, and you can't use a parents credit card if it's a cryptocurrency casino.
3. Hacks, exploits etc are a part of the internet. Measures should be in place to lock and correspond with the user if there is an exploit or hack, KYC is not needed in this dispute resolution process.
4. Scamming? I don't understand at all as to how KYC prevents scamming between a player and a casino. If anything, it promotes scamming by the casino by holding user balances hostage at the cost of their privacy.
5. If you lose your password, use forgot password. If you lose 2FA, use the backup phrase. If all else fails, contact support and verify in other ways, like signing a message from a deposit address. Ultimately, this is the users responsibility. KYC is not an appropriate measure for this purpose.
6. KYC regulation is up to a certain amount of money in a period of time. Look at Bybit, no KYC users can withdraw up to 2 BTC per day with no limit on deposits.
7. It is up to the user to manage their gambling habits, it is not a sensible measure to reduce gambling addictions.
8. It is up to the user to follow regional gambling restrictions, and regulators to enforce them. Costing privacy for this reason is unacceptable and has never been the way of the internet.
You are storing your identity and your sensitive documents online. That never has and never will be safe. Every internet user has the right to privacy, and KYC-by-default violates that privacy.
I didn't notice until you stated it. If you didn't I would not have noticed. I hope I shed some light on the other side of the coin.