The dollar rose like a rocket from 10/24 to 1/25. Then it reversed and went back to right where it was before the sudden rise.
That has nothing to do with the comment you replied to. I was talking about Trump's cluelessness what is needed to retain the dollar's status as the world's reserve currency which is at best weakly related to its valuation relative to other currencies.
It was most likely driven by hedge funds speculating that Trump would replace Power and dramatically lower interest rates. That didn't happen and the trade reversed.
Only if hedge fund managers don't understand how the Fed chairmanship works. Trump can't replace Powell until February 2026, when Powell's term expires. Not unless Trump can make the case that he needs to be removed for cause, which would require evidence of misconduct, not just policy disagreement.