I think this is also due to ICO, STO, or IEO that use the USD pair as one of the currencies that can be used for deposits. After all, a coin offering is rare which requires even banning users from the USA who might be one of the causes of declining performance

I doubt that Euro will replace US dollar as the world reserve currency. Instead, Bitcoin might be the replacement. Although the US has been heaping up too much debt without paying, an analyst once postulated that the US dollars is technically backed by crude oil. Let's see how the economic war swing. I expect bitcoin and other currencies as ripple and credits to rise the more to meet the trade war.

All thing happening because the American trade war.China,Russia and all other countries and victim of this trade war.After election USD got strong day by day.America 1st theme went all over the america and most of companies move back to US.Jobs for americans and America got strong because of the trade decisions.Other countries pay the prize unwillingly.So they needed the alternative.So they moved to EURO and Gold. That is the reason EURO got demand.

when you say : I don't think that the US government will let that happen.

do you know what you say in deep....there is inifinty supply of dollars which mean the value of the dollar will go down with time and the price in supermarkets ,cars,houses and other things go up only.. its like to fuel car with hole....ask any smart economist everything is depend on the max supply, if there is to much supply or infinity supply the price only will go down and while it go down the price of clothes,cars,houses and other go up which lead to bad place....

the governments print huge amount of money but hey there is another problem
smart criminals know to fake any paper money ONE ON ONE and basically make money from thin AIR...

do you know how much money faked by smart criminals on a daily basis only inside the usa,,, hell you will fall, and they fake it one on one ...