I can't recall when I last saw a Square terminal (it may just be less apparent now), but this is how the Bitcoin adoption problem is solved at the merchant level. Just give it to them with no requirements on their end if they want to remain on a fiat standard. Win-win.

Removing the bullshit tax and KYC requirements (I don't care to hear how you ignore them - cool) would be game over. There would be practically no hangups left for most people. Just choose your wallet and go.