The USD is a reserve currency which has many profound effects associated with that it is not a "bubble" asset class at this point.
When the USD expands its currency base it actually does reduce the the USD valuation relative to other countries.
That is the definition of a bubble. If people buy Tesla because they think others want to buy Tesla stocks rather than thinking the company will do well, then Tesla stocks are in a bubble. The same thing applies to USD. It being a reserve currency means it can keep its value without having assets backing up that value, that is how we define a bubble. Of course bubbles can last a long while, which is probably what you mean, but it is still a bubble and it will pop at some point.
Another reserve currency right now are bitcoins. Bitcoins being used as a reserve currency means people buy it to keep the value high, so that their savings doesn't go to waste. I'd still argue that bitcoins are a bubble, like the USD.
FYI: Money has three functions: a store of value, medium of exchange and a unit of account. Fiat currency does not have assets backing it up for that you would need the gold standard that we abandoned in in the 70s.
A bubble: "Bubble, in an economic context, generally refers to a situation where the price for something—an individual stock, a financial asset, or even an entire sector, market, or asset class—exceeds its fundamental value by a large margin."
And to your bitcoin comment: not even the slightest - bitcoin is not money it does not have the same functions it is a speculative asset investment (taxed on your gains, which money doesn't have).
lol no. Do you have any proof of this that's not a crypto blog?
>stop using USD as a global reserve currency
Not gonna happen.
> Not gonna happen.
Why are you so sure of that? Things can happen extremely quickly once it starts, it is when people believe it wont happen that the crash is the worst.
Because I understand basic macroeconomics and how prolific and dependent global finance is on the USD.