Upon all the regulations they have gotten from them, some casinos still come and tell us that they are running No KYC casino and making people to believe and register with them and play games and only for the gamblers to find out that they are heavily KYC probably when they are requested to join the VIP groups or Clubs or upgrading of account.
It is good to come out plain and the interested gamblers would still join and play games there. And if a casino has some countries restricted, they should state it clearly on the ToS or on the interface of the casino by not allowing the user to register so gamblers would suffer and use their energy to visit the site.
No KYC casinos are the ones that are used by those who do not want to submit their personal details at the casino and at the same time those who are minors or underage, their only option is to gamble at No KYC casinos. However I would advice not to deposit too much at such casino because they can ask for KYC if the withdrawal request are big or they may find anything suspicious in the gambler's account, they always have this card to play, that is demand for KYC for proceeding for withdrawals etc.
But with the developments in the gambling business today, most are getting their license so they can operate better, hence, most of them are requiring kyc from their clients. Very few casinos have no KYC requirement up until now. I would say, the trust is already in the casinos that require KYC.