Age is never a barrier to holding bitcoin or investing in it, bitcoin is not what the academic institutions can also analysis for justification over fiat for it acceptance but the relevance of bitcoin had made it all simple and applicable for everyone interested in learning or knowing what a decentralized digital currency is, there are many ways we could persay that bitcoin is what the world current economy situations wants without age limit just as fiat never have any age barrier for usage, bitcoin is for everyone, while everyone interested will learn the process and make an opportunity through its adoption.
You're right, but it's a shame you didn't read our previous conversation about Bitcoin both young and old. So this context has actually been resolved that the most important issue is in terms of the level of understanding, not the context of the age range. Actually it's all simple, just adjust it, bitcoin for anyone I agree.
To me it seems to come down to some individual specifics, but right from the start, we should be able to anticipate that age could have a BIG determining part, but not necessarily eliminate the person's determination regarding getting into bitcoin.
So if we look at the factors, they look like this:
When you invest into bitcoin, at minimum you should be attempting to consider:
1) cashflow,
2)how much bitcoin you have already accumulated,
3) other investments (including cash reserves),
4) view of bitcoin as compared with other investments,
5) timeline,
6) risk tolerance,
7) your time, skills, goals (investment/lifestyle targets , which includes figuring out the extent that you are in BTC accumulation, maintenance or liquidation stage)

your abilities to strategize, plan, research and learn along the way including tweaking strategies from time to time to consider:
8 a) trading, reallocating, use of leverage and/or financial instruments.
I am not going to say that some of these are not important, yet several of the top factors are more basic and some to the later factors such as 7 & 8 are a bit more mushy, and really 8 a) are more advanced strategies and sometimes still might need to be considered by someone getting in and/or out of bitcoin.
So age mostly affects timline, but surely we could see how age might affect each and every one of the factors, so we should not necessarily be too quick to judge why someone might need to modify their approach as compared with someone else, whether that is age or some other things that might be going on with that particular person at that particular time in their life.