When parents are very dedicated people, they pay a lot of attention to their documents and constantly control their bank accounts and monitor everything their child is doing on the internet, then there is little room for their child to get involved in gambling, because minors old used their parents' identity documents to create accounts in casinos and then used their parents' bank cards to play,
I really don't think so currently as minors now do more of physical gambling in the casinos especially those of them with bigger physiques and you cannot tell how old they really are. Funny enough in my country, there is little or no physical restriction of minors in offline casinos, they are much welcomed, and their gambling activities entertained.
These minors have grown wiser now, they know very well that the bankroll of their parents can mean a setup for them, so they can even use that of their grandparents who are less tech savvy or that of their grown friends who are still gamblers like them.
but nowadays casinos and those who buy and sell cryptocurrencies have a very evolved kyc system that consists of the person taking the ID and holding it while the camera scans the face of the person holding the ID to see if that person's face matches the face on the ID, with this evolved kyc system, it has become very difficult for minors of age to use casinos, because in my opinion I do not think that the number of children who get involved in gambling is increasing
They can deceive grannies to do this when they have a good relationship and afterwards use their accounts for their preferred purposes, the parents can offer parental controls in the emails in their devices and ensure those emails are not replaced by these young ones in order to stay abreast with their activities, else the more restrictive approaches by these companies, the smarter these lads are getting to bypass those security concerns.