I came up with this rule several years ago, after one too many experiences of costumers coming up to me and asking where to find the freeze-dried apples. The problem isn't so much that it's awkward for me, but I feel bad for the others who always seem so embarrassed when they're told, "Sorry, I don't work here. But I do think the Spicy Indonesian Chips are in that aisle over there."
Fortunately, people who shop at Trader Joe's tend to be quite nice, so it's not too bad. But honestly, it really is a jumble, so I do try to avoid it.
I'll get my Dr. Prager's California Veggie Burger some other day.