I just found the video on youtube and there was nothing wrong with it.
What about the Persume Nissa. Imagine a secular jew watching this , and the only holiday songs he knows are related to christmas and now he sees a bunch of jewish boys singing about Chanukah.
Now he feels good about lighting the Menorah and maybe doesnt put up his Chanukah Bush this year.
If one person did not put up a Chanukah Bush beause of this appearence it was One thousand times persume nissa than a Menorah on 13th Ave