I have deposited small amount and won big amount then withdraw without much challenges but that was before all casinos are now requesting for KYC. Casinos aren't as fun as they were when you're not force to pass KYC and you can gamble as much as you want.
Today just for small wins, I have to pass KYC or sometimes you have to pass the KYC before you can bet on the casinos, all this regulations are taking the fun out of gambling. No casino would want to force their players to complete KYC if they weren't been forced by the fed.
The government are trying to control everything and they're focusing more on cryptocurency and platforms that uses them like casino and sportsbook. They want people not be comfortable using them so they stop getting customer and making profits to kill the platforms.
I think that this is normal, it is the duty of every casino, if a person deposits and wins, it is their right to withdraw, and yes, there should not be a KYC requirement to do so, because it would condition them or force them to give their data in order to opt for the benefit, I do not agree with the KYC to withdraw, I think it is an act of obligation that should not be, but all casinos have those rules, Or the ones I know are already setting those conditions and it's something that nobody likes, I like to play and withdraw, if I want to, I'll go back to the casino or not, but when they force someone you don't like, it doesn't feel comfortable at all.