For me at age 10 my children should understand the market and how it works, interpreting chats and deciding the next move of each coin from studying the price action of different coins. At age 13 the should start trading with a demo account and at age 15 they should have funded their first account. This would help them become financially independent, also help then limit future gambling prowess and also make them prepared for their careers
Funds has been one of the limiting factors many people encountered while pursuing their dreams and ambitions. For me I see it as means where the could comfortably fund their ambitions without much stress and still have enough for fun and recreation.
We just need to realize that some kids will never understand it, it will not be in them at all. I have seen people who never understood anything about money, my wife is included in that list as well. Compared to me, she has zero knowledge how finances work, she doesn't even let a single dollar debt in her card, this month we had a big emergency and I had to find some extra cash somewhere, you know why? Because, she had to pay that debt all at once at the start of the month, that is how serious she is when it comes to debt. Me? I could take a million dollars debt to buy some mining equipment and put it somewhere and I wouldn't lose a night's sleep over it.
I would be excited about the items I got, but wouldn't worry about the debt at all. When people do not even know the difference between good debt and bad debt, you can't expect them to understand trading which is even more complex.