Gunslinger is a smuggle, Operative is an Imperial Agent.
He should be differentiating between Gunslinger and Scoundrel, rather than generalizing them as Smugglers.
Since they are mirror classes, you can use the names interchangeably. I'm surprised you'd take the time for such an irrelevant display of pedantry. Especially trying to imply I'm an idiot just because I don't care if a person says scoundrel or operative.