I have some difficulties conceiving saving large amounts of value (whether bitcoin or otherwise) for kids who may or may not deserve some kind of a windfall at the age of 18.., especially if parents have a lot of difficulties getting to a status of abundance, self-sufficiency and/or fuck you status for themselves, so why should they be spoiling their kid in such a large way that the kid does not have to build some kind of earning skills for themselves, but sure parents can do what they like in terms of whether the money would have any strings attached or maybe such saved money would be dedicated for a college fund or some other kinds of specific learning and/or skill building designations, which makes more sense, since it is a way for the kid to be able to build for themselves, such as going to college.
If the parents are saving $100 per week for their kid, then how much would they be saving for themselves? The amounts that the parents save for themselves should be more than the amount saved for the kid, no? There is the saying to put the mask on for yourself before putting the mask on for others, which puts you in a better place to help others if you are in a good position for yourself.
My own personal idea would be the the amount saved for the kid would be quite a bit smaller amount than the amount for the parent, and perhaps even at most 20% for the kid's funds and 80% or more for the parent's funds... if the kid's funds has 18 years to grow and to compound upon itself, then it has a long time to build up and it does not need to be a lot of value in order to have compounding effects so maybe it could even be 5% to 10% the size of the parent's funds.
The other idea with something like a long term kid funds is that the value would be locked away (and not tapped into) for 18 years or so, so that can be a pretty BIG commitment from the parents to lock aside potentially a lot of funds that may gain in value a lot over the years if the parents end up having more discipline with the child funds as compared with their own funds (in terms of not tapping into the child's funds, but then they might be tapping into their own funds and causing their own funds to under perform the child funds).
Surely balancing how to build your own funds and your child funds simultaneously could be a bit of a challenge for parents.
My father never really saved for himself, and I saw what that could mean, they did give me a good life, didn't really "save" money but they spent their money on a great education for me, which was of course nice and allowed me to earn a decent amount, not so much nowadays but usually I did earn more than most of my friends except this year, which I can thank my education for it.
However, I believe that we are not looking at something that would be a lot better and a lot longer on this term, I can't really consider this to be changing because when I saw my parents not saving for themselves and having a difficult life, that did leave a bad mark on my psyche that I should be careful and life could be bad any moment. I always have anxiety over my finances because ı kept seeing them have that. So, it is better to save for your kid of course, but maybe saving a bit for yourself and having a decent life so they can see you are doing fine is important as well.