I think there is an overreaction to this.
Hasn't everyone been to a Bar Mitzvah or formal Jewish / Muslim event when
Halal or Kosher experts come into the kitchens etc to ensure food is prepared correctly ?
I always don a Kippah if required.
If people have strong religious views isn't it polite to respect them ?
I doubt this is going to play out with assistants grandly storming off- more "
let me get someone to help you with that..."
we must resist the urge to join in on Daily Mail/Sun/ etc etc faux outrage.
