AVAs + AOCs = Who Cares?

Does the American Wine Consumer actually purchase wine based on the American Viticultural Area designated on the label?

Mr. American Wine Consumer: "Look, honey, this chardonnay is from the Santa Maria Valley, so it must be good!"

Mrs. American Wine Consumer: ""I'll say, sweetie, let's get it!"

Mr. AWC: "Okey-dokey!"

Mrs. AWC: "By the way, where is the Sant…