A good casino will make sure there are no minors playing and I reckon that is much more difficult if they accept crypto and they do no KYC or little KYC. Thus, I think it is for the parents to exercise the oversight of the sites the underage people have access to and how they manage their money and even their crypto. Again that is quite difficult, but there is nothing easy about being a parent is there?
You are absolutely right, sometimes being a Parent is not easy at al l, one thinks that children do not know certain things, and they are so impressive that they are capable of memorizing long passwords (access) in Seconds and they can also make a Difference because there are systems where they understand them quickly and are so expert that they are capable of camouflaging themselves very well when one as a parent goes to supervise them , I mean, they are too smart, so in these things one has to be much Smarter than them, learn certain tools so that they cannot Manipulate us.
I take exception to this, though possible with some careless parents but to those parents that take parenting seriously, they can't be insensitive around their children on important matters and adult-related content. It's a bad excuse for parents to claim that the smartness of their children made them know their password, how? If not they are careless. Many parents will carelessly do everything in front of their children while some will even give their children their phones or other gadgets with sensitive things to play with not minding the fact that children may sway from what they were originally given the gadgets for due to their own inquisitive nature and curiosity. If at all you have to give your children such, passwording sensitive apps and programs is important.