actually doing KYC on a gambling site that is popular and has a good reputation a long time ago, for me is fine. unless doing KYC on a new gambling site I am very careful to do that.
therefore it is important to use small funds first when trying out a new casino. with small deposits and bets, the casino will not force gamblers to submit KYC documents. although some may indeed require KYC for all members to make withdrawals.
some gamblers are indeed more comfortable with their anonymity. but some will not consider KYC. even those who are hunting for referral bonuses or even new casino user event bonuses also consciously do KYC to claim bonuses. it all depends on the perception of each.