Yep, agreed. The problem, minor though it is, is that there are a bunch of people that should refer to themselves as Pescatarian, but don't.

I suspect that they refer to themselves as vegetarians because it's simpler and encapsulates a large chunk of their preferences. It just causes confusion when they go to the waiter. "I'm vegetarian....Oh, I'll have the fish"

In any case I was simply trying to explain why I liked the 'part-time' thing.