As a parent to the child, can you allow the child to use your details to pass KYC verification, if asked? And if you do that, does it also mean that you are supporting underage gambling?
The question here is if you allow yourself to waste the opportunity since you're talking about after a big win? If yes, then you're just nothing.
I have no problem with that anyway. I can support my kid in that case, but that's going to be the last bet he makes.
A responsible gambler doesn't involve their kids in gambling early. There is the right time for them. And we know that winning is not just good but a beginning for addiction. If I allow my kid to continue gambling, it is just the same as pushing him to addiction.