US and Bitcoin

I'm trying not to be offensive to Americans, but I've just seen a post where a person asks if the USD crashes what would happen to the BTC, and if it would go to 0... With a lot of people answering that yes.

Bro, do the Americans know that there are other economics outside US?

China and the yuan, Europe and the Euro, Japan and the yen are really solid economies and you can measure the value of Bitcoin with them.

Not everyone in crypto is from USA, so not all the money in crypto is USD.

I get that a big amount of money comes from the US, obviously, but it's not the only single country that buys crypto. I think it's very easy to understand.