I do not think that setting an age limit on the channel solves this problem because many children and teenagers watch YouTube without registration. They are gullible and very often try to get easy money. That's why I'm of the opinion that YouTube should tighten its policy for advertising fraud up to banning the channel without the possibility of restoring it. Only such measures will help clean up YouTube from promoting scams.
It is difficult that something like this will happen, YouTube needs viewers and they need content creators to use their platform for this, so it is likely they aware of the problem but they choose to ignore it as they are obtaining benefits out of this as well, so like always it is up to each person to learn how to protect themselves from advertisement like this which is incredibly deceiving, unfortunately a not small number of people are very naive and will believe something like this is possible and will gamble money they cannot afford to lose.