Yes, eventually everyone will need to understand Bitcoin, at least well enough to use it on a day-to-day basis. Not everyone understands the inner workings of cars, but anyone who wants to drive needs to learn to understand them well enough to use them. Similarly, anyone who wants to save the value of their labor in a way that can't be debased, and wants to transact in a way that can't be censored, will need to learn how to use Bitcoin, but won't need to comprehend all of its technicalities. As all fiat currencies inevitably fail, Bitcoin will become the only sensible option.

This is why Bitcoin adoption is growing rapidly in third world countries. Learning how to use Bitcoin, with only a rudimentary understanding of how it works, is all that the people in those countries need, since they already know 𝘸𝘩𝘺 they need it.