I find it strange, in general, when people deposit their money on platforms that lack licenses, registration, and official certifications. Even if a license is listed on the website, I’m sure most people don’t verify it- they just "take it at face value". You can’t be so irresponsible with your money! It’s simply disrespectful to the hard work and time you spent earning that money!
Considering that a lot of people are investing in just about any shitcoins and meme tokens, which get wiped out in a rug pull within minutes of launch, it should come as no surprise that gamblers, too, are willing to spend money on just about anything and deposit their funds on any platform.
As for gambling platform licenses, I think if scammers put in the effort, they can create a fake page to verify the license so that a user who isn't paying close attention won't even notice the scam at first glance.