To put it another way: instead of making us feel something and breaking our hearts through the choreography itself, it's using the 9/11 tragedy as a shortcut to give the program an emotional heft—that it doesn't actually earn...
^ This! Averbukh's choreo for this program is the very definition of kitsch and some of the reactions this program generated (it's so provocative! it makes you think and feel!) only serve to reinforce this, IMO.