All casinos use the Curacao license because it is the easiest to get. Yes, the license does not guarantee that the casino will work honestly, so you need to study other factors, such as user reviews, reputation, how long the casino has been operating on the market. If the casino is fraudulent, it will not work on the market for 10 years.
I think people are more inclined to look at reputation, reviews and how long the site has been active than to look at their licenses, I also don't really focus on licenses as the main criterion that it's a good casino, because all casinos can be scams when they really go bankrupt unable to pay and just disappear, many casinos just disappear, so I think finding a casino that is really active on this forum is my main factor to judge and see if this casino is good or not.
By looking at the reputation, reviews and activity of the casino, you can determine whether the casino is truly worthy and trusted or not.
But actually the license is no less important for a casino because having a casino license can further prove that they are genuine and not illegal.
Almost all big and trusted casinos, of course, have their own licenses.
Here I'm still confused why you don't really care about a clear license that is also one of the determining factors whether they will commit fraud or not in the future