Fast forward to 2018, and the Olive Garden website now provides a thorough explanation about its gluten free pasta (imported from Italy -- rah!) and the handling procedures in the kitchen designed to avoid cross contamination -- as well as its other "gluten-sensitive" options (dishes made without gluten-containing ingredients, but Olive Garden cannot ensure that the dishes meet FDA gluten free standards).
Please reference Olive Garden's full explanation of its gluten-sensitive menu options, preparation details, etc., here.
The Tuscan-designed Olive Garden that the diner described in her 2012 review mirrored others that I have visited; but, what really impressed me was her attention to people such as us, gluten free and allergenic diners, with the following lines: "An olive branch on menu items signified low-fat entrees. There is a Garden Fare Nutrition Guide available for customers seeking gluten-free food." The reviewer, it seems, was hip after all! See the original review, here.