Whilst I think there’s some truth to this, America’s elite would have brought us to this point anyway. Trump is a symptom of unfettered neoliberalism exporting jobs and destroying communities rather than a cause. Bin Laden drew America into forever wars and solidified their enemies in some dimensions. But America’s great downfall has been the ruthless pursuit of self-interest by its elite. They smashed the social compact and destroyed its institutions in the pursuit of profit.
I think Bin Laden will get a chapter in the book on the fall of America, but Reagan will be on the front cover.