What the author fails to point out is that eating seafood every day sucks. It's too rich/sweet/salty. It's like eating cake for every meal. It's not that people are fickle or stupid or whatever he's trying to point out here. No one wants to eat lobster every day. Not even people in the midwest. Ohh, and to add to that, eating a lot of shellfish can cause you to become allergic to it.

Source: I come from a coastal town and love crab, but couldn't eat it more than one or two times a week.