Widely used, maybe. Stable? Not even close. Take a look at the ballooning deficit, debt, debt ceiling, Federal Reserve balance sheet, etc. The most stable fiat currency is probably the Swiss Franc (CHF).
It is not such a big difference, if you compare to some other small currencies from Europe you will see it's nothing special, against the Czech crown it was 1:20 in 2005, it's 1:23 now, even against the euro it was 0.92 5 years ago it's still 0.92 today.
Besides, on long term even against the USD there is nothing major, just a 4% increase, of course with his and downs but for the last decade, the most traded currencies have somewhat kept the same ratio.
If we compare it with currencies from the so-called third world it's pretty damn stable, gaining 2-300% even against countries who are not at war or under sanction or went through a revolution, I think all south American currencies have lost at least 3x compared to the USD in the last ten years.
Deficit, debt, spending, inflation, people would still put more faith in the economy of the US rather than in the Russian economy who has barely 10% debt to GDP ratio but who has a habit of going bankrupt. Romania has 30% ratio, one of the lowest in the EU, and interestingly they have a homeownership of nearly 90%, what would you buy dollars, euros, or Romanian
lions?
Obviously Trump's very poor overall record on jobs isn't really a fair comparison due to COVID, but even before the pandemic, Trump's record on job was distinctly average when compared to the last 100 years.
To be honest, considering the amount of Americans that were screaming they will immigrate to Canada if Trump becomes president and how many anticipated another catastrophe and collapse, I must say he did pretty well, he actually managed to raise the employment rates (I never look at unemployment rates as I consider that misleading) a thing Biden will have no way to accomplish, not with millions of immigrants coming into the country, no matter how many trillions he will spend with that stupid bill he will not be able to create 5 million jobs on top of the lost ones and adding the population ratio.