I remember sitting at the FE station on an AA 707 back in 1966 (with that good old Astrojet logo on the side). Quite a cool looking position to a pre-teen back then.
I also remember sitting at the FE station on a Clipper 747 back in 70 or 71 (can’t remember exactly). (Friend was a FE) It was still impressive to a teenager back then. When I was growing up, the FE was definitely a standalone position that you aimed for if you could not/did not want to become a pilot. It was impressed on me that you were not going beyond FE to become a pilot. Just how it was often viewed in those times. I didn’t know back then there would come a day when jets would not need a FE. Funny, I know.