Thats true, license is one indication that you're in the right casino however we know its not only the basis.
What exactly do you mean by the "right" casino here? The license of a casino does not protect you in any way from someone recreating Roobet, for example, and wanting to scam you. Even if they did, it would be very easy to forge the license in such a case. The existence of a license should therefore never be relied upon when you want to check whether you are on a fake site or not.
Exactly what you're saying and I truly agreed with that.
Any casino can scam us anytime without notice.
Maybe what he means the "right" is people will see that the casino trying to be serious to manage his business because of the license on the site.
Having a license itself needs to do much verification from the casino owner so at least, with the license on the site can calm down us while playing on the site.
But still, no matter the site has a license or not, we must manage our money and know our limit to playing gambling.
That's why atleast we select the casino which have huge user base and been successful already for running their business with several promotions running around since we can assure that we somehow in the safe place knowing that they are already earning huge from their users and we can expect that they will last long and will not scam their users. Although license is not really a basis to trust but atleast we see them up complying to became a legal platform.