Your decisions will be okay by you because as for me 13 years is a good age bracket enough for me to start introducing Bitcoin to my kids, I believe if they start leaning especially the basics before getting to 18 they will become more grounded with Bitcointalk knowledge including the potential risks and benefits, if kids grow up to a certain point where they are even earning it also means that they are are very much responsible for their actions and reactions, the only thing you can do is to guide them ass much as you can while they have their final decision.
I will engage my kids to know internet money(bitcoin) before they even start going to kindergarten but the level of exposure is going to be limited to the things they know. I don't want to be a dad that will be teaching my kids the things they need to know early at the age of teenage. I once saw a bitcoin book thread here for kids explaining basic things Bitcoin can do for people, those are the kind of books parents with aspiring Bitcoin can get to their kids to learn and not necessarily learn the technical aspect.
I will be happy if my kid have a place in his heart to have some Bitcoin, like if I can get the opportunity to go back in time I will be what I want my kid to do now but unfortunately I can't do that but I can make my kids do the same. The problem here is that this guy parents failed him, they didn't do the duty of parent or maybe they did but didn't try enough to study what their kids done behind scenes, children can be innocent until you see the things they do in hidden.