KYC can be asked for all sorts of reasons, we don't need to violate ToS to be asked for verification! Simple moving funds too fast you touch the AML policy and you can be asked for KYC! Anyway, it's not a big deal if someone is honest!
It's possible that he has made a mistake/violated part of the TOS so some accounts have to verify KYC early due to his alleged abuse or suspected account, but whatever the speculation of the main cause we should review the TOS again because he should have completed the KYC before making any withdrawals.
Obviously OP is just trolling here and don’t really have no problem with the site because he can’t give any proof for this and he has been accusing many sites already. KYC can always be ask and it’s stated very clear in all casinos because the casinos also want to protect their own interest and if they let those gamblers to withdraw big money easily then casinos might face bigger problem later on. KYC is still an issue here but eventually gamblers will get used to that especially if there’s a big money involve.