Completely agree. But I doubt that any run of the mill practicing Muslims have complained. Islam is a peaceful faith and has many similarities with the various derivations of Christianity. The similarities outweigh the differences. Both instruct tolerance and compassion.
I don't think that dressing up for a show is inflammatory behaviour.
It'll be some jumped up idiot at OFCOM (almost certainly of plain old Caucasian descent anyway) trying to justify their pitifully needless job.