It has nothing to do with DeBlasio. This is all on the 9/11 Memorial & Museum a foundation whose board chairman is Michael Bloomberg and whose board is filled with a bunch of major NYC corporate A-holes.
I think Alberta’s Child is correct. The article is not clear as to who gave the order to cancel the official 9/11 ceremony. I just checked another article. This article seems to say that the 9/11 Memorial and Museum cancelled the event. But even then the phrasing is odd. I sure wish todays journals knew how to present facts.
https://www.foxnews.com/politics/new-york-city-911-tribute-cancelled-geraldo-rivera