doge can be one of the most powerful reasons to educate them. Just look at Elon with a few tweets about doge. he was very successful in providing education for the general public who did not understand crypto.
I do not think Elon Musk's tweets are educational purposes but purely promotional; this way I am not seeing dogecoin could be a reason for making kids to be aware of cryptocurrencies. Because, even Elon Musk may forget all cryptos when he is about to launch new Tesla models or when opening new factory units in China/India or might get busy with hyperloop or starlink projects or may switch over to another dead coin. Who know?