"Soft-power" is a delayed indicator not a leading indicator.
Currently (2020-) we are surely living the Peak of the AngloEmpire 2.0, West Empire or Roman-Biblical Empire
Queen Isabella of Castile, Nero and Caligula, the high priest Ananus the elder, Tiglath-Pileser III and ThutMoses III to name a few would feel at Home and would smile when watching this old and worn out Mediterranean movie.
So far we have seen:
(1) The Wall Street Wars (1846- and it is difficult to close with a figure as this story intersects with the history of the British Empire and the last "End of the world": 1914-1949)
(2) The Adolf II War, where Adolf left off his war against communism Washington picked up (1945/47-1991)
(3) Ziocon Wars (1991-2021)
(4) (2022-2049)
With all of this convoluted rambling I want to say that in my humble (haha) opinion, the western empire has 30 years left at the top.