If you are referring to the title I agree it was a very controversial choice. However the title of the piece was listed as "La Tour", so I don't think Tonya choosed that song to create a controversy, but rather because she liked the music. Who knows... If you are reffering to the music genre itself, I'm sorry, I don't find anything controversial in that music, it's a normal house music piece and she was far from the only skater that picked that kind of music. Now it is uncommon, but in the 80s and 90s it was way more common among skaters. Just remember Bourne/Kraatz's "Love Parade" program.
