Yep. It's a self-fulfilling prophecy. Actual exceptionalism ended coinciding with the end of WW2. It's America's slow and steady decline like Rome. 250 years / 10 generations is about all a civilization typically lasts. Apathy, corruption, incompetence, disorder, inequality, poverty, decay, tyrants, and ultimately: dissolution.

Here's an insightful prognostication by the late, great Chalmers Johnson around 2005: https://youtu.be/Q2CCs-x9q9U