Not sure if this is worth reading into, but an employee at yesterday's mock service posted a photo of the partial menu that was available to diners to choose from. At the bottom of the abridged menu, a disclaimer read "Vegetarian and vegan options available". The kitchen could have just been making dishes that weren't on the shorter menu for employees that request them, or they might have an alternative vegetarian/vegan menu.
From
Ryan Leaverton on Facebook