I don't think that most of them are still reading comic books. But majority of them are into those kid videos and cartoons.
But it's a good start for giving them the idea of what you're trying to convey to them as a message on what to learn. They'll soon realize that and will remember what you're doing for them.
Let kids enjoy what they want to do and explore things that are appropriate for their age. See first if they have a huge interest in Bitcoin before introducing it to them at an early age. If not, just teach them about it when they have enough understanding at the right time.
It is actually a good idea to teach our kids about the importance of Bitcoin but we must also consider their mental welfare. We have to be sure that they are ready to absorb everything because even we, adults are also having a hard time dealing with it sometimes. Let your kids play and enjoy their childhood and teach them about Bitcoin when they're ready and you think they're mature enough to handle it.
It will eventually shown if they've got an interest. They're still be the one to decide whether they'll push that interest or not.
But it's up to the guardians on what they'll introduce them and what will make them excited to learn for new resources and gaining new knowledge just as knowing bitcoin.
We do have our own ways of teaching kids but still, it's still them that will decide if they'll patronize it.