On September 13, 2001, a memorial service was held in St. Paul's Cathedral in London. When the “Star Spangled Banner” was played, the Queen of Great Britain joined in the singing of the National Anthem of a foreign power with an air of great grief and love.
While we think of and/or commemorate 9/11 and “Never forget,” this profound act of Queen Elizabeth's is truly something we should always remember.
Just who made you queen to issue such an order? The only "cr@p" (as you call it) is the discredited idea that birthright elevates any man above another. I have nothing against the British monarch, but we Americans do not bow, curtsy or otherwise demonstrate fealty to ANY monarch. We fought two bloody wars against the British crown to settle that issue.
As you pointed out, Elizabeth accorded our president with the respect due any head of state. President Trump accorded the same to Elizabeth. She is just another person holding an important office; no more and no less.