I am sorry but jetteson has been on this forum long enough to know perfectly well that Flyblue is crew and it is my very humble opinion that he was himself being at best patronising and at worst bl**dy rude.
I think Flyblue's reply was an excellent way of demonstrating to everyone that she does indeed know plenty about being a cabin crew member and was extremely restrained and polite considering the provocative tone of jetteson's remark.
(Jetteson has a fairly well-documented history on this forum of being a right pain in the ar*e.
)