It is still uncertain whether Powell will be replaced by someone else (close to Trump). Because according to the US Constitution, the Senate is the body with the authority to decide who will be the chairman of the Fed , not Trump.
I don't like US dominance either but I don't think they will have hyperinflation or become so weak that they lose their superpower status in the near future . A new world order is emerging and becoming more evident with the rise of BRICS and countries increasingly not wanting to depend on the US, but we need to accept the fact that they will still be the superpower in the next 1 or 2 decades .
that is something that can not be denied anymore because the US is still a superpower, and to shift it requires hard work, especially BRICS which will actually compete with it, but all is not as easy as expected, but all about the function of the economic order that occurs, and Hyperinflation could approach the US even though the past few months have subsided but now it has shown signs of rising again after tariffs will increase inflation.