We just have to accept the fact that there will always be people who will not understand crypto fully, they will continue to exist for a very long time.
There is a great douglas adams quote that says "in technology peoples approach are the same, whatever existed when you were born were the natural order of things, whatever comes up between your age of 15-35 will be exciting and new career opportunity, whatever new after you are 35 is against natural order" and that's what I believe.
Nowadays that 35 is probably closer to 50 because tech improves very fast but I still think people approach things still the same. There are still people who do not know how to use mobile phones, not even saying smart phones, literally mobile phones that were first invented, the really old 20 year old versions.
Ignorance cannot be avoided when it comes to the knowledge of bitcoin and cryptocurrencies. Even how much we tell others about it each day it wouldn't be enough still. Not everyone has an interest upon learning what is it and what it does that's why even others heard about clear and vivid informations about, they still choose to ignore it. Sooner or later, people will realize what they miss out and as the use of it spread all over the world, they will have no choice but to pay attention and learn about it. In the near future, technology will continue to advance and we will all witness how essential the knowledge on bitcoin and cryptocurrency is.