Are you positing that had the Fed raised rates earlier that the dollar wouldn’t have strengthened?
The US dollar strengthens when (1) the world goes into downturn, and/or (2) when US interest rates rise.
In what scenario would the US dollar not have strengthened? It was inevitable regardless of what the Fed does because of the greenback’s dominance in world reserves and trade. It’s a currency of last resort in times of busts and booms. The dollar smiles.