I personally don't think it's that far fetched to assume that everyone in the world has heard/seen/invested in BTC, or other cryptocurrencies, I probably wouldn't say this 2 years back, but ever since the insane price hikes, and the constant media attention and references, it's pretty hard to get by life and not know about cryptocurrencies.
Bitcoin has come along way we have seen massive adoption and so many videos, news, and articles about websites and many people have invested and are now using Bitcoin do you think after ten years majority of people around the world have heard or read Bitcoin one time or another?
based from my experience from people around my circle, majority heard about bitcoin, but the context of bitcoin isn't present to their idea what bitcoin is. Few knows it is a good currency but allot of my colleague think that bitcoin is illegal, due to the concept they heard from others. What I am doing is continuously supporting bitcoin to show them what bitcoin is capable of, and is safe and secured.
That's the problem with media presence and coverage nowadays, at the start it was only covered as a payment method for shady people doing illegal things, and then it was a get rich quick scheme or a ponzi, I've rarely seen outlets cover the technology behind it.