I've heard about this multiple times since Ritual of Refreshment was first introduced in 2.3: Mages are a little combusted over casting this food creation spell in the battlegrounds. Their first complaint was the reagent cost-- even though casting buffs is free in BGs, the reagent cost is still there for mages, and so lots of them haven't bothered casting it at all (I ran an AB to research this story-- tough work, but someone's got to do it-- and though we had two mages, I didn't see a table at all).
But now, the other problem arising is actually ninja looters-- people are joining the battlegrounds, grabbing all the food from the table, and then afk-ing out. It seems crazy to me, but it's happening, and Neth says (as per Blizzard's rules) that stealing items from other players in this way isn't actually a violation of game policies. But it is dumb. Never mind why you would need all that food, but it seems like the issue would be easy enough to fix-- either make food conjured in BGs stay in BGs, or just make the food unique to 100 (apparently people are sometimes stealing all 50 stacks right off the table).
Of course, that doesn't fix the other RoR problems-- a few mages are also wondering why they get to lay a great spread, while only getting crumbs and water themselves, but that's a problem for another day. Have you had your Manna biscuits ganked in the BGs?