I had two clients from America I want offer graphics designing jobs for, I demanded my payment would be in BitcoinBTC or Ethereum. To my greatest dismay, they were dumfounded on what Bitcoin or Ethereum is. I am still suprised up to this very moment. 
There is nothing to be surprised about, just because you know about cryptocurrency doesn’t mean that everyone is going to know about it. Most of my clients that I worked, I wasn’t even the one that suggested the Bitcoin to them, they are the ones who ask me whether I accept Bitcoin as payment and then I would say yes. I always let them use any payment method I feel they are going to be okay with, and it’s mostly PayPal that a lot of people make use of, only very few have talked about Bitcoin. And as for Ethereum, I don’t see any single person that uses that lol. Unlike most other people do imagine, not all Americans are leading a luxurious life style to get know and to adopt all the latest technologies and innovations. As of June 2020, there are 21 million American are jobless and applying for government benefits. So, there should not be any mandatory for all Americans to be aware of bitcoin nor cryptos.