The USD already is a shitcoin. Think about it. The USD has racist images of slave owners on the 1,2,20 dollar bills. Those slave owners raped their teenage slaves. This is why everyone who goes to the grocery store should always ask if they can use an alternative non-racist currency. And when they say they do not accept non-racist money, you are required to call the cashier and manager racists, leave a bad review, and then sue the grocery store for violating your civil rights (if you are white, I guess you can donate 70% of all the money you obtained to the NAACP or you can give it directly to African Americans in need). American money is not only a scam, but it is also racist because the racist Americans who use it are racist racists.
You may also send me your racist money to
https://github.com/sponsors/jvanname where I will dispose of it properly. By sending me your racist money to dispose of, we can all end racism! If you don't send me your racist money to dispose of, then you are a racist racist.
Actually, what you say does not make much sense, in my opinion.
Firstly, the value and strength of a currency against other around the world has little to nothing to do with whose face is on the paper. There are obviously more important macroeconomics reasons which could make someone not to appreciate one currency in favor or others.
Also, by the time the colonies of the Americas started to fight for independence it was common for people to have slaves and obviously those in power to fight for the freedom of people were white people with resources. If you applied your logic, we should not use or hold other currencies from around the world with the faces of military people, emperors, kings or queens. Those were not only responsible of the conquering and enslavement of entire countries but also the death of many.