I'm not really seeing the USA moving from strength to strength lately TBH. Iran is a disaster, the Navy now has 3 (or 4, depending how you count) failed warship projects in a row, economic growth outside the AI/datacenter boom has dropped to near zero and the internal political climate is polarized to the point of inactivity. Most of its traditional allies have been moving to distance themselves from the USA and worldwide trust in the USA as "leader of the free world" is at the lowest point in decades.

But quite beyond that, I'm just saying that the Thucydides trap is not an iron rule. The first place I looked was a counterexample and I'm sure there have been many more over the centuries.