Yeah, being a subclass, I don't mind it. It's a game term, it's not like the PCs introduce themselves using it in game. "Hi, I'm Bob the eldritch knight. These are my friends, Suzie the assassin and Gary the battle master. Pleased to meet you."
It sounds much more impressive when you use the Thaumaturgy cantrip to beef up your introduction.
'I am Bob: *ELDRITCH KNIGHT!*. These are my companions. Suzie: *ASSASSIN!* and Gary: *BATTLE MASTER!*.'