Absolutely not. Tho it's quite possible but this is not the right time. USD still is the number one currency in the world. Yet bitcoin would be used in many things in the future and I assure you that.
Yes I agree, Bitcoin is valued against them and not vize versa, people often take it as a commodity rather than a currency, I yet don't get it, why does Bitcoin have to replace existing Fiat, they are happily Co existing with each other no need to for any of them to supplant with each other. Bitcoin is limited, paper currencies are not, so no in my opinion Bitcoin will never replace them, but will supplant them, and that's the way it should be.