A gambling site can state that you do not need to provide KYC before you can withdraw, but know that it would also be stated that they can ask for KYC at anytime. Those gamblings sites are centralized, because they do not require KYC for withdraw do not mean they can not request for KYC at anytime.
It requires KYC.
https://justbit.io/pl/policy/payment2. To withdraw funds from the account, the user is required to complete identity verification through kyc procedure at his users account. justbit reserves the right to check users identity and source of deposited funds prior to processing payouts and to hold withdrawals for the time needed to check the users identity. in case of false personal data provided by the user, the withdrawal can be denied and the user account can be cancelled. the user will be informed thereof by email noted at his/her users account.
They Have also FIAT deposits and withdrawals. Why you state "NO KYC FOR CRYPTO PLAYERS" in the middle of the front page of their site if you will request for KYC anyway?!
Op, is this your first withdrawal? Because according to gamblingbro.com it stats that you don't have to complete kyc for your first withdrawal.
Although that review written by gamblingbro was made a long time ago so it seems like they have made some changes in the way they do things, I'm not able to give an explicit answer to your question because I haven't used the casino before (not planning to anyway).
P.s typing when the first post came, so according to his post they stated in their policy that KYC is required, now may I ask Op did you bother to go through their Terms on withdrawal, deposit, staggering requirement and restricted countries? If not then I might shift the blame to you a little.
If they have any representative here in bitcointalk then you should try reaching out to them so that they can clear the air on this issue.
SIR, in the middle of their page they have just "NO KYC for Crypto Players" statement. I really don't see the point to check the terms anymore if this is stated in the front page. If it was for KYC I would play on Betfair, Pinnacle and WIlliamHIll not in some shitty sportsbook like this