Also, I do not think that anyone sets limits for others on this basis, but rather the whole matter is psychological barriers that a person creates for himself in order to find justifications for his inability. It takes a lot of determination and a little patience to make it work.
Some people still use the age factor as an excuse to justify their inability and laziness in learning about modern technologies, even after they are convinced that it can make their work and life in general easier. I don't know if these people had previously looked for alternatives when they were young, but I doubt it.
Also, there is no specification of when the age factor becomes a barrier to learning, since we may find people of a relatively advanced age who do not recognize the time barrier and seek to constantly develop their knowledge and abilities, while others who are younger than them use the age factor as an excuse to justify their inability.
The good thing about Bitcoin is that you can learn its basics and get used to using it without having to take in-depth courses or do any exercises. In contrast, many fields that require technical knowledge may not be within the capabilities of everyone, especially those with low academic career.