I would not like to sound extremely negative on that topic, on using KYC as a stalling tactic for shady casinos to steal from their lucky winners (or at least try to do so), but the vast majority of cases I have read online on casinos stalling winners with KYC are quite common while, on the other hand, I have not read about regulators pushing against those tactics or punishing casinos for abusing their KYC policies in order to delay delivering what is of gamblers property.
We can’t jump to conclusions, but your observation has merit because Curacao licenses are often criticized for providing less protection to players compared to stricter jurisdictions like the UK. That’s probably why most crypto casinos opt for a Curacao license as it’s more lenient and casino-friendly but not so much for the players.
That said, there’s some good news. I’ve read that Curacao is working on improving its oversight and regulatory functions. Hopefully, these changes will lead to better player protection, and we’ll see a positive shift in the near future.