There is indeed an effort to reduce, or reduce the appearance of, "American Exceptionalism" in foreign policy circles, particularly among the elites. To me, the photograph encapsulates that very succinctly.
Indeed, that is what all the bowing and scraping is all about -- sending a message that America is now submissive, rather than assertive.
There are protocol officers at the State department, at the embassies and there are protocol officers attached to the White House. He knows better. But he does it anyway.
This is a studied effort to reduce America's standing in the world. I wonder if the incessant rudeness and patent incompetence are part of that same effort -- or just another manifestation of Zero's inexperience.