Sorry your comment has been downvoted to grey. Indeed, the headline is nonsense, payment of tax will continue to be in USD. This is a very silly headline and it's embarrassing seeing it being upvoted on HackerNews.
I would guess it's the "fake news" part that is triggering the downs. Using that phrase is a sure fire way to piss off a subset of all side, but especially people who support/like what the article is saying.
I know it's considered low-quality to discuss voting here, but something is becoming extremely shady with the voting on this forum. Boo be the share of all downvoters too lazy to express their resent in writing and reasoning. Praise be for otterley who bothered to explain it to OP and did his tiny share in building a better world. And wtf for those who downvoted his comment (I'm especially baffled by that one)