Hostility toward Hijab: even in the Arab world

A picture circulated yesterday showing an Egyptian player and a German player in a beach volleyball game at the Olympics.  The Egyptian player was wearing pants and a hijab.  Some in the Arab world expressed hostility toward her and some even mocked her.  My comment in Arabic was: if the hijab did not prevent her from reaching Rio, it means it was not a barrier for her. So why is that some are bothered by it? In this case, the hijab is your problem and not the player's.