It's not that she is not allowed to use it, it is that the program is poorly thought out and the real-life sounds used during the step sequence push it into offensive territory (an easy fix that Averbukh nevertheless refuses to make, I wonder why...). I don't intend to reiterate all the points that have been made in criticizing this program, as there have been many and most of them are valid. What I wanted to point out is that dismissing all such criticism is counterproductive and shuts off discussion.
Another thing: there are two sides to a program , the concept and the execution/choreography. When the concept concerns a controversial/sensitive subject, you'd better make sure that there are no missteps in the execution, because you are already walking a very thin line. Otherwise the program falls flat or worse, risks becoming insulting instead of respectful and poignant. Averbukh's program is the latest example, but for instance I had many of the same issues with Guignard/Fabbri's FD to Schindler's List from last year.