Minors were playing online casinos before KYC became a thing in crypto casinos, and I believe they are still doing so in casinos that are not rigorous or haven't adopted KYC yet. Also, I'm sure they'll figure out a means to avoid KYC, such as discreetly obtaining adult IDs, such as their parents, and so forth. We have what we term "perya" in our area, and children, including grade schoolers, are allowed to gamble.
Even if they stole their parents' ID, they won't still pass the selfie stage unless if they will tell their parents about it but I doubt if their parents will agree. The best thing that they can do is to use their parent's account in their own devices if they are also into gambling. They just want to make sure that they don't bust all the money so that their parent won't be suspicious about it and if they win, they will need to withdraw most of the money in to their own accounts.
The Perya thing, you're talking about there seems like a tradition already in some towns, that is why it's more legal and all ages are allowed there. It's not really that alarming since they don't last long and the games offered are not that addicting compared to the real casinos.
In fact, the idea that someone young might use their parents' credentials without permission is, dare I say, at best unsettling and at worst harmful. Unfortunately, it's unlikely that they'll get past the "selfie" stage without their parents' permission, unless they're really good at lying or their parents have a strange love of gaming. To sneak around using a parent's account? I must say, it reminds me of Charles Dickens. "Please, sir, I'd like some more"...chips.
As for the "Perya" custom, it is a colorful tapestry of community activities and, yes, a little bit of gambling. It is more like a fair than a casino, which is a good parallel. But, don't you think there's a thin line between custom and possible exploitation? It's an interesting dance between the law and morality. Even if the games are short and the stakes are low, does that make it okay to let anyone play?