OK , so situation is not so bad . They allowed some form of head dress in 2010 . So they argue over safety . Surely coverings can be made that do not allow for chocking injury . Such as velcro fastening or semi-rigid fastening or perishable material under load like strong tissue paper fastening or multi-part , segmented fastening............
Also they are still discriminating against Iran , if they allow people with different hair styles like Rastafarian hair , Mohawk hair or tatoo on head , arm or body . These all could be argued have religious importance or political importance .