Hawkmoon, I think you're placing way too much trust in CNN, the Army brass, and other reliably left-wing, TDS-afflicted enemies of the people. We can count on such to spread vicious lies, and be martinets about any little rule that will be very carefully applied to Trump, but totally ignored for anyone else, especially Democrats.
On the day in question, Joe Biden was on vacation, Harris was AWOL, but Trump was willing to lay the wreath, at the request of family members. In a time when America has no president, Donald Trump had to fill in for an hour. He stepped up, and must now be punished for making the Vichy presidency of Biden/Harris look bad.
That is how I feel about it. Change my mind.