So i have just verified. They got access to the kyc documents. They were lying all the time on discord about it and that only 3rd party got it.
here is the email.
https://imgur.com/a/rBTI0nUThis is the case for every casino
3rd party KYC providers may be used. However the casino itself also holds a copy [which only very senior and users under NDAs (I’d assume) would be able to view.